Vulnerability-Lookup

CVE-2024-38663 (GCVE-0-2024-38663)

Vulnerability from cvelistv5 – Published: 2024-06-24 13:50 – Updated: 2026-08-05 11:33

Title

blk-cgroup: fix list corruption from resetting io stat

Summary

In the Linux kernel, the following vulnerability has been resolved: blk-cgroup: fix list corruption from resetting io stat Since commit 3b8cc6298724 ("blk-cgroup: Optimize blkcg_rstat_flush()"), each iostat instance is added to blkcg percpu list, so blkcg_reset_stats() can't reset the stat instance by memset(), otherwise the llist may be corrupted. Fix the issue by only resetting the counter part.

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-06-25 13:51 UTC

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/d4a60298ac34f027a…
https://git.kernel.org/stable/c/89bb36c72e1951843…
https://git.kernel.org/stable/c/6da6680632792709c…

Impacted products

2 products

Vendor	Product	Version	CPE status
Linux	Linux	Affected: 3b8cc6298724021da845f2f9fd7dd4b6829a6817 , < d4a60298ac34f027a09f8f893fdbd9e06279bb24 (git) Affected: 3b8cc6298724021da845f2f9fd7dd4b6829a6817 , < 89bb36c72e1951843f9e04dc84412e31fcc849a9 (git) Affected: 3b8cc6298724021da845f2f9fd7dd4b6829a6817 , < 6da6680632792709cecf2b006f2fe3ca7857e791 (git)	guessed
Linux	Linux	Affected: 6.2 Unaffected: 0 , < 6.2 (semver) Unaffected: 6.6.33 , ≤ 6.6.* (semver) Unaffected: 6.9.4 , ≤ 6.9.* (semver) Unaffected: 6.10 , ≤ * (original_commit_for_fix)	guessed

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-38663",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-06-25T13:51:20.493125Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-25T13:51:34.429Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T04:12:26.031Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/d4a60298ac34f027a09f8f893fdbd9e06279bb24"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/89bb36c72e1951843f9e04dc84412e31fcc849a9"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/6da6680632792709cecf2b006f2fe3ca7857e791"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "block/blk-cgroup.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d4a60298ac34f027a09f8f893fdbd9e06279bb24",
              "status": "affected",
              "version": "3b8cc6298724021da845f2f9fd7dd4b6829a6817",
              "versionType": "git"
            },
            {
              "lessThan": "89bb36c72e1951843f9e04dc84412e31fcc849a9",
              "status": "affected",
              "version": "3b8cc6298724021da845f2f9fd7dd4b6829a6817",
              "versionType": "git"
            },
            {
              "lessThan": "6da6680632792709cecf2b006f2fe3ca7857e791",
              "status": "affected",
              "version": "3b8cc6298724021da845f2f9fd7dd4b6829a6817",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "block/blk-cgroup.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.2"
            },
            {
              "lessThan": "6.2",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.33",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.9.*",
              "status": "unaffected",
              "version": "6.9.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.10",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.33",
                  "versionStartIncluding": "6.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.9.4",
                  "versionStartIncluding": "6.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.10",
                  "versionStartIncluding": "6.2",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblk-cgroup: fix list corruption from resetting io stat\n\nSince commit 3b8cc6298724 (\"blk-cgroup: Optimize blkcg_rstat_flush()\"),\neach iostat instance is added to blkcg percpu list, so blkcg_reset_stats()\ncan\u0027t reset the stat instance by memset(), otherwise the llist may be\ncorrupted.\n\nFix the issue by only resetting the counter part."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerability is triggered by writing to the cgroup v1 control file `blkio.reset_stats` and by submitting block I/O from the same cgroup, both of which require local access to the machine (cgroupfs write + write(2)/read(2) to a block device or file). There is no network, adjacent-network, or physical path into `blkcg_reset_stats()`.\nAC:L - The attacker controls both sides of the race: they generate I/O inside their own cgroup to populate `blkcg-\u003elhead` via `blk_cgroup_bio_start()` and concurrently write `blkio.reset_stats` in a loop from another thread, and `blkcg_reset_stats()` takes only `blkcg-\u003elock`, which the I/O path never acquires. Once `lqueued` is cleared on a still-linked node, the very next bio deterministically re-adds it and forms a cycle \u2014 no memory layout or timing outside the attacker\u0027s influence is needed, and failed attempts can be retried indefinitely.\nPR:L - `cgroup_kn_set_ugid()` explicitly sets cgroup directories and control files to the uid/gid of their creator, so an unprivileged user or container root with write access to a delegated cgroup v1 blkio subtree (standard in LXC/LXD, Docker/Kubernetes, and systemd `Delegate=` setups) can `mkdir` a child cgroup and own its `blkio.reset_stats` file, then generate I/O and write it. No init-namespace root or capability is required, and the resulting lockless-list corruption is not confined to the attacker\u0027s own cgroup \u2014 it hangs the whole machine.\nUI:N - The attacker performs both the I/O submission and the `blkio.reset_stats` write from their own processes; no victim has to mount, open, or otherwise interact with anything.\nS:U - The corrupted `blkg_iostat_set` lockless lists and the resulting crash/corruption are entirely within the kernel\u0027s own security authority; no VM, hypervisor, or IOMMU boundary is crossed by the bug itself.\nC:H - This is a memory-corruption defect \u2014 `memset()` over live `llist_node` linkage and the `lqueued` membership flag inside per-CPU `blkg_iostat_set` objects \u2014 which desynchronizes the list-membership invariant that the blkg lifetime rules depend on (in the v6.2\u2013v6.4 part of the affected range llist membership held a `percpu_ref` on `blkg-\u003erefcnt`, so lost/duplicated puts corrupt `struct blkcg_gq` lifetime accounting). The same broken invariant in this exact function has since produced a confirmed slab use-after-free in `__blkcg_rstat_flush()`, and dangling/looped links into kmalloc\u0027d blkg and per-CPU stat memory are leverageable for kernel memory disclosure via heap grooming.\nI:H - The corrupted links cause `__blkcg_rstat_flush()` to write unbounded, attacker-influenced counter deltas through the cyclic chain into ancestor blkgs\u0027 `iostat` (`blkcg_iostat_update(parent, ...)`), modifying kernel state belonging to higher-privileged cgroups, and the underlying pointer/refcount corruption of `struct blkcg_gq` is the classic primitive for heap grooming and writes through stale pointers. Per kernel CNA practice, list corruption of this class is treated as exploitable for control-flow-relevant memory modification.\nA:H - The reliable, immediate outcome is a cyclic lockless list that makes `llist_for_each_entry_safe()` in `__blkcg_rstat_flush()` spin forever while holding the global `raw_spinlock_t blkg_stat_lock` with local IRQs disabled \u2014 every other CPU entering rstat flush then spins too, producing a hard lockup and watchdog panic. Additionally, the `memset`-to-`bis-\u003eblkg = blkg` window lets a concurrent flush dereference a NULL `blkg`, and the truncated chains permanently leak blkg references and per-CPU stats."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:33:20.039Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/d4a60298ac34f027a09f8f893fdbd9e06279bb24"
        },
        {
          "url": "https://git.kernel.org/stable/c/89bb36c72e1951843f9e04dc84412e31fcc849a9"
        },
        {
          "url": "https://git.kernel.org/stable/c/6da6680632792709cecf2b006f2fe3ca7857e791"
        }
      ],
      "title": "blk-cgroup: fix list corruption from resetting io stat",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-38663",
    "datePublished": "2024-06-24T13:50:51.710Z",
    "dateReserved": "2024-06-21T11:16:40.592Z",
    "dateUpdated": "2026-08-05T11:33:20.039Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2024-38663",
      "date": "2026-09-17",
      "epss": "0.00259",
      "percentile": "0.17836"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-38663\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-06-24T14:15:12.630\",\"lastModified\":\"2026-08-04T11:18:54.960\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nblk-cgroup: fix list corruption from resetting io stat\\n\\nSince commit 3b8cc6298724 (\\\"blk-cgroup: Optimize blkcg_rstat_flush()\\\"),\\neach iostat instance is added to blkcg percpu list, so blkcg_reset_stats()\\ncan\u0027t reset the stat instance by memset(), otherwise the llist may be\\ncorrupted.\\n\\nFix the issue by only resetting the counter part.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: blk-cgroup: corrige la corrupci\u00f3n de la lista al restablecer io stat Desde el commit 3b8cc6298724 (\\\"blk-cgroup: Optimizar blkcg_rstat_flush()\\\"), cada instancia de iostat se agrega a la lista de percpu de blkcg, por lo que blkcg_reset_stats() no puede restablecer la instancia de estad\u00edsticas mediante memset(); de lo contrario, la lista puede estar da\u00f1ada. Solucione el problema reiniciando solo la contraparte.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"block/blk-cgroup.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"3b8cc6298724021da845f2f9fd7dd4b6829a6817\",\"lessThan\":\"d4a60298ac34f027a09f8f893fdbd9e06279bb24\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"3b8cc6298724021da845f2f9fd7dd4b6829a6817\",\"lessThan\":\"89bb36c72e1951843f9e04dc84412e31fcc849a9\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"3b8cc6298724021da845f2f9fd7dd4b6829a6817\",\"lessThan\":\"6da6680632792709cecf2b006f2fe3ca7857e791\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"block/blk-cgroup.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.2\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.2\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.33\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.9.4\",\"lessThanOrEqual\":\"6.9.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.10\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-06-25T13:51:20.493125Z\",\"id\":\"CVE-2024-38663\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.33\",\"matchCriteriaId\":\"FCE796DF-3B50-4DC6-BAE5-95271068FC9E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.9.4\",\"matchCriteriaId\":\"991B9791-966A-4D18-9E8D-A8AB128E5627\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/6da6680632792709cecf2b006f2fe3ca7857e791\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/89bb36c72e1951843f9e04dc84412e31fcc849a9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d4a60298ac34f027a09f8f893fdbd9e06279bb24\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6da6680632792709cecf2b006f2fe3ca7857e791\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/89bb36c72e1951843f9e04dc84412e31fcc849a9\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d4a60298ac34f027a09f8f893fdbd9e06279bb24\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-08-04T22:45:07+00:00",
      "cve": "CVE-2024-38663",
      "id": "CVE-2024-38663",
      "initial_release_date": "2024-06-24T00:00:00+00:00",
      "product_status:fixed": "513",
      "product_status:known_affected": "112",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: blk-cgroup: fix list corruption from resetting io stat",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-38663.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/d4a60298ac34f027a09f8f893fdbd9e06279bb24\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/89bb36c72e1951843f9e04dc84412e31fcc849a9\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/6da6680632792709cecf2b006f2fe3ca7857e791\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T04:12:26.031Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-38663\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-06-25T13:51:20.493125Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-06-25T13:51:29.445Z\"}}], \"cna\": {\"title\": \"blk-cgroup: fix list corruption from resetting io stat\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"3b8cc6298724021da845f2f9fd7dd4b6829a6817\", \"lessThan\": \"d4a60298ac34f027a09f8f893fdbd9e06279bb24\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"3b8cc6298724021da845f2f9fd7dd4b6829a6817\", \"lessThan\": \"89bb36c72e1951843f9e04dc84412e31fcc849a9\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"3b8cc6298724021da845f2f9fd7dd4b6829a6817\", \"lessThan\": \"6da6680632792709cecf2b006f2fe3ca7857e791\", \"versionType\": \"git\"}], \"programFiles\": [\"block/blk-cgroup.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.2\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.2\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.6.33\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9.4\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.9.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"block/blk-cgroup.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/d4a60298ac34f027a09f8f893fdbd9e06279bb24\"}, {\"url\": \"https://git.kernel.org/stable/c/89bb36c72e1951843f9e04dc84412e31fcc849a9\"}, {\"url\": \"https://git.kernel.org/stable/c/6da6680632792709cecf2b006f2fe3ca7857e791\"}], \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nblk-cgroup: fix list corruption from resetting io stat\\n\\nSince commit 3b8cc6298724 (\\\"blk-cgroup: Optimize blkcg_rstat_flush()\\\"),\\neach iostat instance is added to blkcg percpu list, so blkcg_reset_stats()\\ncan\u0027t reset the stat instance by memset(), otherwise the llist may be\\ncorrupted.\\n\\nFix the issue by only resetting the counter part.\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-12-19T09:06:20.971Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-38663\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-19T09:06:20.971Z\", \"dateReserved\": \"2024-06-21T11:16:40.592Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-06-24T13:50:51.710Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}

FKIE_CVE-2024-38663

Vulnerability from fkie_nvd - Published: 2024-06-24 14:15 - Updated: 2026-08-04 11:18

Severity

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/6da6680632792709cecf2b006f2fe3ca7857e791	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/89bb36c72e1951843f9e04dc84412e31fcc849a9	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d4a60298ac34f027a09f8f893fdbd9e06279bb24	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/6da6680632792709cecf2b006f2fe3ca7857e791	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/89bb36c72e1951843f9e04dc84412e31fcc849a9	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/d4a60298ac34f027a09f8f893fdbd9e06279bb24	Patch

Impacted products

	Vendor	Product	Version
	linux	linux_kernel	*
	linux	linux_kernel	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "block/blk-cgroup.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d4a60298ac34f027a09f8f893fdbd9e06279bb24",
              "status": "affected",
              "version": "3b8cc6298724021da845f2f9fd7dd4b6829a6817",
              "versionType": "git"
            },
            {
              "lessThan": "89bb36c72e1951843f9e04dc84412e31fcc849a9",
              "status": "affected",
              "version": "3b8cc6298724021da845f2f9fd7dd4b6829a6817",
              "versionType": "git"
            },
            {
              "lessThan": "6da6680632792709cecf2b006f2fe3ca7857e791",
              "status": "affected",
              "version": "3b8cc6298724021da845f2f9fd7dd4b6829a6817",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "block/blk-cgroup.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.2"
            },
            {
              "lessThan": "6.2",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.33",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.9.*",
              "status": "unaffected",
              "version": "6.9.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.10",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "FCE796DF-3B50-4DC6-BAE5-95271068FC9E",
              "versionEndExcluding": "6.6.33",
              "versionStartIncluding": "6.2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "991B9791-966A-4D18-9E8D-A8AB128E5627",
              "versionEndExcluding": "6.9.4",
              "versionStartIncluding": "6.7",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblk-cgroup: fix list corruption from resetting io stat\n\nSince commit 3b8cc6298724 (\"blk-cgroup: Optimize blkcg_rstat_flush()\"),\neach iostat instance is added to blkcg percpu list, so blkcg_reset_stats()\ncan\u0027t reset the stat instance by memset(), otherwise the llist may be\ncorrupted.\n\nFix the issue by only resetting the counter part."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: blk-cgroup: corrige la corrupci\u00f3n de la lista al restablecer io stat Desde el commit 3b8cc6298724 (\"blk-cgroup: Optimizar blkcg_rstat_flush()\"), cada instancia de iostat se agrega a la lista de percpu de blkcg, por lo que blkcg_reset_stats() no puede restablecer la instancia de estad\u00edsticas mediante memset(); de lo contrario, la lista puede estar da\u00f1ada. Solucione el problema reiniciando solo la contraparte."
    }
  ],
  "id": "CVE-2024-38663",
  "lastModified": "2026-08-04T11:18:54.960",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-38663",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-06-25T13:51:20.493125Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-06-24T14:15:12.630",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/6da6680632792709cecf2b006f2fe3ca7857e791"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/89bb36c72e1951843f9e04dc84412e31fcc849a9"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/d4a60298ac34f027a09f8f893fdbd9e06279bb24"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/6da6680632792709cecf2b006f2fe3ca7857e791"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/89bb36c72e1951843f9e04dc84412e31fcc849a9"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/d4a60298ac34f027a09f8f893fdbd9e06279bb24"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

GHSA-JW6J-6FR8-787W

Vulnerability from github – Published: 2024-06-24 15:31 – Updated: 2025-10-03 15:31

Details

In the Linux kernel, the following vulnerability has been resolved:

blk-cgroup: fix list corruption from resetting io stat

Since commit 3b8cc6298724 ("blk-cgroup: Optimize blkcg_rstat_flush()"), each iostat instance is added to blkcg percpu list, so blkcg_reset_stats() can't reset the stat instance by memset(), otherwise the llist may be corrupted.

Fix the issue by only resetting the counter part.

Severity

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2024-38663"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-06-24T14:15:12Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nblk-cgroup: fix list corruption from resetting io stat\n\nSince commit 3b8cc6298724 (\"blk-cgroup: Optimize blkcg_rstat_flush()\"),\neach iostat instance is added to blkcg percpu list, so blkcg_reset_stats()\ncan\u0027t reset the stat instance by memset(), otherwise the llist may be\ncorrupted.\n\nFix the issue by only resetting the counter part.",
  "id": "GHSA-jw6j-6fr8-787w",
  "modified": "2025-10-03T15:31:13Z",
  "published": "2024-06-24T15:31:45Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-38663"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6da6680632792709cecf2b006f2fe3ca7857e791"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/89bb36c72e1951843f9e04dc84412e31fcc849a9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d4a60298ac34f027a09f8f893fdbd9e06279bb24"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

RHSA-2024:4583

Vulnerability from csaf_redhat - Published: 2024-07-17 01:06 - Updated: 2026-08-25 14:46

Summary

Red Hat Security Advisory: kernel security update

Severity

Important

Scope

17 vulnerabilities in this advisory, including CVE-2024-38663.

CVE-2024-38663

4.4 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Fixed: 279 products

https://access.redhat.com/errata/RHSA-2024:4583

Open the full advisory

RHSA-2024:5066

Vulnerability from csaf_redhat - Published: 2024-08-07 09:43 - Updated: 2026-08-18 14:31

Summary

Red Hat Security Advisory: kernel security update

Severity

Moderate

Scope

22 vulnerabilities in this advisory, including CVE-2024-38663.

CVE-2024-38663

4.4 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Fixed: 200 products Known not affected: 1 product

https://access.redhat.com/errata/RHSA-2024:5066

Open the full advisory

RHSA-2024:5067

Vulnerability from csaf_redhat - Published: 2024-08-07 00:14 - Updated: 2026-08-18 14:31

Summary

Red Hat Security Advisory: kernel-rt security update

Severity

Moderate

Scope

22 vulnerabilities in this advisory, including CVE-2024-38663.

CVE-2024-38663

4.4 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Fixed: 34 products

https://access.redhat.com/errata/RHSA-2024:5067

Open the full advisory

SUSE-SU-2024:2571-1

Vulnerability from csaf_suse - Published: 2024-07-22 10:34 - Updated: 2024-07-22 10:34

Summary

Security update for the Linux Kernel

Severity

Important

Scope

285 vulnerabilities in this advisory, including CVE-2024-38663.

CVE-2024-38663

5.5 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Recommended: 181 products

Open the full advisory

SUSE-SU-2024:2896-1

Vulnerability from csaf_suse - Published: 2024-08-13 14:09 - Updated: 2024-08-13 14:09

Summary

Security update for the Linux Kernel

Severity

Important

Scope

402 vulnerabilities in this advisory, including CVE-2024-38663.

CVE-2024-38663

5.5 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Recommended: 35 products

Open the full advisory

SUSE-SU-2024:2973-1

Vulnerability from csaf_suse - Published: 2024-08-20 07:15 - Updated: 2024-08-20 07:15

Summary

Security update for the Linux Kernel

Severity

Important

Scope

783 vulnerabilities in this advisory, including CVE-2024-38663.

CVE-2024-38663

5.5 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Recommended: 31 products

Open the full advisory

SUSE-SU-2025:20008-1

Vulnerability from csaf_suse - Published: 2025-02-03 08:47 - Updated: 2025-02-03 08:47

Summary

Security update for the Linux Kernel

Severity

Important

Scope

848 vulnerabilities in this advisory, including CVE-2024-38663.

CVE-2024-38663

5.5 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Recommended: 11 products

Open the full advisory

SUSE-SU-2025:20028-1

Vulnerability from csaf_suse - Published: 2025-02-03 08:51 - Updated: 2025-02-03 08:51

Summary

Security update for the Linux Kernel

Severity

Important

Scope

826 vulnerabilities in this advisory, including CVE-2024-38663.

CVE-2024-38663

5.5 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Recommended: 3 products

Open the full advisory

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2024-38663 (GCVE-0-2024-38663)

Tags

Sightings

Nomenclature

Related by attack behaviour