Vulnerability-Lookup

oesa-2025-1337

Vulnerability from osv_openeuler

Published

2025-03-29 11:08

Modified

2026-08-06 11:08

Summary

kernel security update

Details

The Linux Kernel, the operating system core itself.

Security Fix(es):

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

drm/amd/display: Fix memory leak

[why] Resource release is needed on the error handling path to prevent memory leak.

[how] Fix this by adding kfree on the error handling path.(CVE-2022-49135)

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

block: fix rq-qos breakage from skipping rq_qos_done_bio()

a647a524a467 ("block: don't call rq_qos_ops->done_bio if the bio isn't tracked") made bio_endio() skip rq_qos_done_bio() if BIO_TRACKED is not set. While this fixed a potential oops, it also broke blk-iocost by skipping the done_bio callback for merged bios.

Before, whether a bio goes through rq_qos_throttle() or rq_qos_merge(), rq_qos_done_bio() would be called on the bio on completion with BIO_TRACKED distinguishing the former from the latter. rq_qos_done_bio() is not called for bios which wenth through rq_qos_merge(). This royally confuses blk-iocost as the merged bios never finish and are considered perpetually in-flight.

One reliably reproducible failure mode is an intermediate cgroup geting stuck active preventing its children from being activated due to the leaf-only rule, leading to loss of control. The following is from resctl-bench protection scenario which emulates isolating a web server like workload from a memory bomb run on an iocost configuration which should yield a reasonable level of protection.

# cat /sys/block/nvme2n1/device/model Samsung SSD 970 PRO 512GB # cat /sys/fs/cgroup/io.cost.model 259:0 ctrl=user model=linear rbps=834913556 rseqiops=93622 rrandiops=102913 wbps=618985353 wseqiops=72325 wrandiops=71025 # cat /sys/fs/cgroup/io.cost.qos 259:0 enable=1 ctrl=user rpct=95.00 rlat=18776 wpct=95.00 wlat=8897 min=60.00 max=100.00 # resctl-bench -m 29.6G -r out.json run protection::scenario=mem-hog,loops=1 ... Memory Hog Summary ==================

IO Latency: R p50=242u:336u/2.5m p90=794u:1.4m/7.5m p99=2.7m:8.0m/62.5m max=8.0m:36.4m/350m W p50=221u:323u/1.5m p90=709u:1.2m/5.5m p99=1.5m:2.5m/9.5m max=6.9m:35.9m/350m

Isolation and Request Latency Impact Distributions:

            min   p01   p05   p10   p25   p50   p75   p90   p95   p99   max  mean stdev

isol% 15.90 15.90 15.90 40.05 57.24 59.07 60.01 74.63 74.63 90.35 90.35 58.12 15.82 lat-imp% 0 0 0 0 0 4.55 14.68 15.54 233.5 548.1 548.1 53.88 143.6

Result: isol=58.12:15.82% lat_imp=53.88%:143.6 work_csv=100.0% missing=3.96%

The isolation result of 58.12% is close to what this device would show without any IO control.

Fix it by introducing a new flag BIO_QOS_MERGED to mark merged bios and calling rq_qos_done_bio() on them too. For consistency and clarity, rename BIO_TRACKED to BIO_QOS_THROTTLED. The flag checks are moved into rq_qos_done_bio() so that it's next to the code paths that set the flags.

With the patch applied, the above same benchmark shows:

# resctl-bench -m 29.6G -r out.json run protection::scenario=mem-hog,loops=1 ... Memory Hog Summary ==================

IO Latency: R p50=123u:84.4u/985u p90=322u:256u/2.5m p99=1.6m:1.4m/9.5m max=11.1m:36.0m/350m W p50=429u:274u/995u p90=1.7m:1.3m/4.5m p99=3.4m:2.7m/11.5m max=7.9m:5.9m/26.5m

Isolation and Request Latency Impact Distributions:

            min   p01   p05   p10   p25   p50   p75   p90   p95   p99   max  mean stdev

isol% 84.91 84.91 89.51 90.73 92.31 94.49 96.36 98.04 98.71 100.0 100.0 94.42 2.81 lat-imp% 0 0 0 0 0 2.81 5.73 11.11 13.92 17.53 22.61 4.10 4.68

Result: isol=94.42:2.81% lat_imp=4.10%:4.68 work_csv=58.34% missing=0%(CVE-2022-49266)

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

module: fix [e_shstrndx].sh_size=0 OOB access

It is trivial to craft a module to trigger OOB access in this line:

if (info-&gt;secstrings[strhdr-&gt;sh_size - 1] != &apos;\0&apos;) {

BUG: unable to handle page fault for address: ffffc90000aa0fff PGD 100000067 P4D 100000067 PUD 100066067 PMD 10436f067 PTE 0 Oops: 0000 [#1] PREEMPT SMP PTI CPU: 7 PID: 1215 Comm: insmod Not tainted 5.18.0-rc5-00007-g9bf578647087-dirty #10 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-4.fc34 04/01/2014 RIP: 0010:load_module+0x19b/0x2391

rebased patch onto modules-next

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

bus: fsl-mc-bus: fix KASAN use-after-free in fsl_mc_bus_remove()

In fsl_mc_bus_remove(), mc->root_mc_bus_dev->mc_io is passed to fsl_destroy_mc_io(). However, mc->root_mc_bus_dev is already freed in fsl_mc_device_remove(). Then reference to mc->root_mc_bus_dev->mc_io triggers KASAN use-after-free. To avoid the use-after-free, keep the reference to mc->root_mc_bus_dev->mc_io in a local variable and pass to fsl_destroy_mc_io().

This patch needs rework to apply to kernels older than v5.15.(CVE-2022-49711)

Severity

7.8 (High)


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

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2022-49135	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2022-49266	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2022-49444	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2022-49711	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "kernel-5.10.0-257.0.0.159.oe2203sp3.aarch64.rpm",
          "kernel-debuginfo-5.10.0-257.0.0.159.oe2203sp3.aarch64.rpm",
          "kernel-debugsource-5.10.0-257.0.0.159.oe2203sp3.aarch64.rpm",
          "kernel-devel-5.10.0-257.0.0.159.oe2203sp3.aarch64.rpm",
          "kernel-headers-5.10.0-257.0.0.159.oe2203sp3.aarch64.rpm",
          "kernel-source-5.10.0-257.0.0.159.oe2203sp3.aarch64.rpm",
          "kernel-tools-5.10.0-257.0.0.159.oe2203sp3.aarch64.rpm",
          "kernel-tools-debuginfo-5.10.0-257.0.0.159.oe2203sp3.aarch64.rpm",
          "kernel-tools-devel-5.10.0-257.0.0.159.oe2203sp3.aarch64.rpm",
          "perf-5.10.0-257.0.0.159.oe2203sp3.aarch64.rpm",
          "perf-debuginfo-5.10.0-257.0.0.159.oe2203sp3.aarch64.rpm",
          "python3-perf-5.10.0-257.0.0.159.oe2203sp3.aarch64.rpm",
          "python3-perf-debuginfo-5.10.0-257.0.0.159.oe2203sp3.aarch64.rpm"
        ],
        "src": [
          "kernel-5.10.0-257.0.0.159.oe2203sp3.src.rpm"
        ],
        "x86_64": [
          "kernel-5.10.0-257.0.0.159.oe2203sp3.x86_64.rpm",
          "kernel-debuginfo-5.10.0-257.0.0.159.oe2203sp3.x86_64.rpm",
          "kernel-debugsource-5.10.0-257.0.0.159.oe2203sp3.x86_64.rpm",
          "kernel-devel-5.10.0-257.0.0.159.oe2203sp3.x86_64.rpm",
          "kernel-headers-5.10.0-257.0.0.159.oe2203sp3.x86_64.rpm",
          "kernel-source-5.10.0-257.0.0.159.oe2203sp3.x86_64.rpm",
          "kernel-tools-5.10.0-257.0.0.159.oe2203sp3.x86_64.rpm",
          "kernel-tools-debuginfo-5.10.0-257.0.0.159.oe2203sp3.x86_64.rpm",
          "kernel-tools-devel-5.10.0-257.0.0.159.oe2203sp3.x86_64.rpm",
          "perf-5.10.0-257.0.0.159.oe2203sp3.x86_64.rpm",
          "perf-debuginfo-5.10.0-257.0.0.159.oe2203sp3.x86_64.rpm",
          "python3-perf-5.10.0-257.0.0.159.oe2203sp3.x86_64.rpm",
          "python3-perf-debuginfo-5.10.0-257.0.0.159.oe2203sp3.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP3",
        "name": "kernel",
        "purl": "pkg:rpm/openEuler/kernel\u0026distro=openEuler-22.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.10.0-257.0.0.159.oe2203sp3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "The Linux Kernel, the operating system core itself.\r\n\r\nSecurity Fix(es):\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Fix memory leak\n\n[why]\nResource release is needed on the error handling path\nto prevent memory leak.\n\n[how]\nFix this by adding kfree on the error handling path.(CVE-2022-49135)\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nblock: fix rq-qos breakage from skipping rq_qos_done_bio()\n\na647a524a467 (\u0026quot;block: don\u0026apos;t call rq_qos_ops-\u0026gt;done_bio if the bio isn\u0026apos;t\ntracked\u0026quot;) made bio_endio() skip rq_qos_done_bio() if BIO_TRACKED is not set.\nWhile this fixed a potential oops, it also broke blk-iocost by skipping the\ndone_bio callback for merged bios.\n\nBefore, whether a bio goes through rq_qos_throttle() or rq_qos_merge(),\nrq_qos_done_bio() would be called on the bio on completion with BIO_TRACKED\ndistinguishing the former from the latter. rq_qos_done_bio() is not called\nfor bios which wenth through rq_qos_merge(). This royally confuses\nblk-iocost as the merged bios never finish and are considered perpetually\nin-flight.\n\nOne reliably reproducible failure mode is an intermediate cgroup geting\nstuck active preventing its children from being activated due to the\nleaf-only rule, leading to loss of control. The following is from\nresctl-bench protection scenario which emulates isolating a web server like\nworkload from a memory bomb run on an iocost configuration which should\nyield a reasonable level of protection.\n\n  # cat /sys/block/nvme2n1/device/model\n  Samsung SSD 970 PRO 512GB\n  # cat /sys/fs/cgroup/io.cost.model\n  259:0 ctrl=user model=linear rbps=834913556 rseqiops=93622 rrandiops=102913 wbps=618985353 wseqiops=72325 wrandiops=71025\n  # cat /sys/fs/cgroup/io.cost.qos\n  259:0 enable=1 ctrl=user rpct=95.00 rlat=18776 wpct=95.00 wlat=8897 min=60.00 max=100.00\n  # resctl-bench -m 29.6G -r out.json run protection::scenario=mem-hog,loops=1\n  ...\n  Memory Hog Summary\n  ==================\n\n  IO Latency: R p50=242u:336u/2.5m p90=794u:1.4m/7.5m p99=2.7m:8.0m/62.5m max=8.0m:36.4m/350m\n              W p50=221u:323u/1.5m p90=709u:1.2m/5.5m p99=1.5m:2.5m/9.5m max=6.9m:35.9m/350m\n\n  Isolation and Request Latency Impact Distributions:\n\n                min   p01   p05   p10   p25   p50   p75   p90   p95   p99   max  mean stdev\n  isol%       15.90 15.90 15.90 40.05 57.24 59.07 60.01 74.63 74.63 90.35 90.35 58.12 15.82\n  lat-imp%        0     0     0     0     0  4.55 14.68 15.54 233.5 548.1 548.1 53.88 143.6\n\n  Result: isol=58.12:15.82% lat_imp=53.88%:143.6 work_csv=100.0% missing=3.96%\n\nThe isolation result of 58.12% is close to what this device would show\nwithout any IO control.\n\nFix it by introducing a new flag BIO_QOS_MERGED to mark merged bios and\ncalling rq_qos_done_bio() on them too. For consistency and clarity, rename\nBIO_TRACKED to BIO_QOS_THROTTLED. The flag checks are moved into\nrq_qos_done_bio() so that it\u0026apos;s next to the code paths that set the flags.\n\nWith the patch applied, the above same benchmark shows:\n\n  # resctl-bench -m 29.6G -r out.json run protection::scenario=mem-hog,loops=1\n  ...\n  Memory Hog Summary\n  ==================\n\n  IO Latency: R p50=123u:84.4u/985u p90=322u:256u/2.5m p99=1.6m:1.4m/9.5m max=11.1m:36.0m/350m\n              W p50=429u:274u/995u p90=1.7m:1.3m/4.5m p99=3.4m:2.7m/11.5m max=7.9m:5.9m/26.5m\n\n  Isolation and Request Latency Impact Distributions:\n\n                min   p01   p05   p10   p25   p50   p75   p90   p95   p99   max  mean stdev\n  isol%       84.91 84.91 89.51 90.73 92.31 94.49 96.36 98.04 98.71 100.0 100.0 94.42  2.81\n  lat-imp%        0     0     0     0     0  2.81  5.73 11.11 13.92 17.53 22.61  4.10  4.68\n\n  Result: isol=94.42:2.81% lat_imp=4.10%:4.68 work_csv=58.34% missing=0%(CVE-2022-49266)\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nmodule: fix [e_shstrndx].sh_size=0 OOB access\n\nIt is trivial to craft a module to trigger OOB access in this line:\n\n\tif (info-\u0026gt;secstrings[strhdr-\u0026gt;sh_size - 1] != \u0026apos;\\0\u0026apos;) {\n\nBUG: unable to handle page fault for address: ffffc90000aa0fff\nPGD 100000067 P4D 100000067 PUD 100066067 PMD 10436f067 PTE 0\nOops: 0000 [#1] PREEMPT SMP PTI\nCPU: 7 PID: 1215 Comm: insmod Not tainted 5.18.0-rc5-00007-g9bf578647087-dirty #10\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-4.fc34 04/01/2014\nRIP: 0010:load_module+0x19b/0x2391\n\n[rebased patch onto modules-next](CVE-2022-49444)\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nbus: fsl-mc-bus: fix KASAN use-after-free in fsl_mc_bus_remove()\n\nIn fsl_mc_bus_remove(), mc-\u0026gt;root_mc_bus_dev-\u0026gt;mc_io is passed to\nfsl_destroy_mc_io(). However, mc-\u0026gt;root_mc_bus_dev is already freed in\nfsl_mc_device_remove(). Then reference to mc-\u0026gt;root_mc_bus_dev-\u0026gt;mc_io\ntriggers KASAN use-after-free. To avoid the use-after-free, keep the\nreference to mc-\u0026gt;root_mc_bus_dev-\u0026gt;mc_io in a local variable and pass to\nfsl_destroy_mc_io().\n\nThis patch needs rework to apply to kernels older than v5.15.(CVE-2022-49711)",
  "id": "OESA-2025-1337",
  "modified": "2026-08-06T11:08:26Z",
  "published": "2025-03-29T11:08:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-1337"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49135"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49266"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49444"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49711"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "kernel security update",
  "upstream": [
    "CVE-2022-49135",
    "CVE-2022-49266",
    "CVE-2022-49444",
    "CVE-2022-49711"
  ]
}

CVE-2022-49135 (GCVE-0-2022-49135)

Vulnerability from cvelistv5 – Published: 2025-02-26 01:55 – Updated: 2026-08-12 23:58

Title

drm/amd/display: Fix memory leak

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix memory leak [why] Resource release is needed on the error handling path to prevent memory leak. [how] Fix this by adding kfree on the error handling path.

Severity

5.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-10-01 19:48 UTC

CWE

CWE-401 - Missing Release of Memory after Effective Lifetime

Assigner

Linux mitre root

References

5 references

URL	Tags
https://git.kernel.org/stable/c/5076315aaddd640bd…
https://git.kernel.org/stable/c/7e10369c72db7a0e2…
https://git.kernel.org/stable/c/3ce1497add6d17b48…
https://git.kernel.org/stable/c/9d0bef3cc22cf2502…
https://git.kernel.org/stable/c/5d5c6dba2b43e2884…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: f8ac2cf78f276b4d9fc0bc6b90f5e3560caa11de , < 5076315aaddd640bde896ec8d79423ed8ec83a59 (git) Affected: f8ac2cf78f276b4d9fc0bc6b90f5e3560caa11de , < 7e10369c72db7a0e2f77b2e306aadc07aef6b07a (git) Affected: f8ac2cf78f276b4d9fc0bc6b90f5e3560caa11de , < 3ce1497add6d17b48cc9df65095bd20202d93994 (git) Affected: f8ac2cf78f276b4d9fc0bc6b90f5e3560caa11de , < 9d0bef3cc22cf250278ed45b829f062a00af9e27 (git) Affected: f8ac2cf78f276b4d9fc0bc6b90f5e3560caa11de , < 5d5c6dba2b43e28845d7d7ed32a36802329a5f52 (git)
Linux	Linux	Affected: 4.19 Unaffected: 0 , < 4.19 (semver) Unaffected: 5.10.258 , ≤ 5.10.* (semver) Unaffected: 5.15.34 , ≤ 5.15.* (semver) Unaffected: 5.16.20 , ≤ 5.16.* (semver) Unaffected: 5.17.3 , ≤ 5.17.* (semver) Unaffected: 5.18 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "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"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2022-49135",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-01T19:48:09.216128Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-401",
                "description": "CWE-401 Missing Release of Memory after Effective Lifetime",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-01T19:57:02.596Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "5076315aaddd640bde896ec8d79423ed8ec83a59",
              "status": "affected",
              "version": "f8ac2cf78f276b4d9fc0bc6b90f5e3560caa11de",
              "versionType": "git"
            },
            {
              "lessThan": "7e10369c72db7a0e2f77b2e306aadc07aef6b07a",
              "status": "affected",
              "version": "f8ac2cf78f276b4d9fc0bc6b90f5e3560caa11de",
              "versionType": "git"
            },
            {
              "lessThan": "3ce1497add6d17b48cc9df65095bd20202d93994",
              "status": "affected",
              "version": "f8ac2cf78f276b4d9fc0bc6b90f5e3560caa11de",
              "versionType": "git"
            },
            {
              "lessThan": "9d0bef3cc22cf250278ed45b829f062a00af9e27",
              "status": "affected",
              "version": "f8ac2cf78f276b4d9fc0bc6b90f5e3560caa11de",
              "versionType": "git"
            },
            {
              "lessThan": "5d5c6dba2b43e28845d7d7ed32a36802329a5f52",
              "status": "affected",
              "version": "f8ac2cf78f276b4d9fc0bc6b90f5e3560caa11de",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.19"
            },
            {
              "lessThan": "4.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
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CVE-2022-49266 (GCVE-0-2022-49266)

Vulnerability from cvelistv5 – Published: 2025-02-26 01:56 – Updated: 2026-05-23 15:21

Title

block: fix rq-qos breakage from skipping rq_qos_done_bio()

Summary

In the Linux kernel, the following vulnerability has been resolved: block: fix rq-qos breakage from skipping rq_qos_done_bio() a647a524a467 ("block: don't call rq_qos_ops->done_bio if the bio isn't tracked") made bio_endio() skip rq_qos_done_bio() if BIO_TRACKED is not set. While this fixed a potential oops, it also broke blk-iocost by skipping the done_bio callback for merged bios. Before, whether a bio goes through rq_qos_throttle() or rq_qos_merge(), rq_qos_done_bio() would be called on the bio on completion with BIO_TRACKED distinguishing the former from the latter. rq_qos_done_bio() is not called for bios which wenth through rq_qos_merge(). This royally confuses blk-iocost as the merged bios never finish and are considered perpetually in-flight. One reliably reproducible failure mode is an intermediate cgroup geting stuck active preventing its children from being activated due to the leaf-only rule, leading to loss of control. The following is from resctl-bench protection scenario which emulates isolating a web server like workload from a memory bomb run on an iocost configuration which should yield a reasonable level of protection. # cat /sys/block/nvme2n1/device/model Samsung SSD 970 PRO 512GB # cat /sys/fs/cgroup/io.cost.model 259:0 ctrl=user model=linear rbps=834913556 rseqiops=93622 rrandiops=102913 wbps=618985353 wseqiops=72325 wrandiops=71025 # cat /sys/fs/cgroup/io.cost.qos 259:0 enable=1 ctrl=user rpct=95.00 rlat=18776 wpct=95.00 wlat=8897 min=60.00 max=100.00 # resctl-bench -m 29.6G -r out.json run protection::scenario=mem-hog,loops=1 ... Memory Hog Summary ================== IO Latency: R p50=242u:336u/2.5m p90=794u:1.4m/7.5m p99=2.7m:8.0m/62.5m max=8.0m:36.4m/350m W p50=221u:323u/1.5m p90=709u:1.2m/5.5m p99=1.5m:2.5m/9.5m max=6.9m:35.9m/350m Isolation and Request Latency Impact Distributions: min p01 p05 p10 p25 p50 p75 p90 p95 p99 max mean stdev isol% 15.90 15.90 15.90 40.05 57.24 59.07 60.01 74.63 74.63 90.35 90.35 58.12 15.82 lat-imp% 0 0 0 0 0 4.55 14.68 15.54 233.5 548.1 548.1 53.88 143.6 Result: isol=58.12:15.82% lat_imp=53.88%:143.6 work_csv=100.0% missing=3.96% The isolation result of 58.12% is close to what this device would show without any IO control. Fix it by introducing a new flag BIO_QOS_MERGED to mark merged bios and calling rq_qos_done_bio() on them too. For consistency and clarity, rename BIO_TRACKED to BIO_QOS_THROTTLED. The flag checks are moved into rq_qos_done_bio() so that it's next to the code paths that set the flags. With the patch applied, the above same benchmark shows: # resctl-bench -m 29.6G -r out.json run protection::scenario=mem-hog,loops=1 ... Memory Hog Summary ================== IO Latency: R p50=123u:84.4u/985u p90=322u:256u/2.5m p99=1.6m:1.4m/9.5m max=11.1m:36.0m/350m W p50=429u:274u/995u p90=1.7m:1.3m/4.5m p99=3.4m:2.7m/11.5m max=7.9m:5.9m/26.5m Isolation and Request Latency Impact Distributions: min p01 p05 p10 p25 p50 p75 p90 p95 p99 max mean stdev isol% 84.91 84.91 89.51 90.73 92.31 94.49 96.36 98.04 98.71 100.0 100.0 94.42 2.81 lat-imp% 0 0 0 0 0 2.81 5.73 11.11 13.92 17.53 22.61 4.10 4.68 Result: isol=94.42:2.81% lat_imp=4.10%:4.68 work_csv=58.34% missing=0%

Severity

No CVSS data available.

Assigner

Linux mitre root

References

4 references

URL	Tags
https://git.kernel.org/stable/c/af9452dfdba4bf735…
https://git.kernel.org/stable/c/dbd20bb904ad5731a…
https://git.kernel.org/stable/c/09737db4c891eba25…
https://git.kernel.org/stable/c/aa1b46dcdc7baaf5f…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: a647a524a46736786c95cdb553a070322ca096e3 , < af9452dfdba4bf7359ef7645eee2d243a1df0649 (git) Affected: a647a524a46736786c95cdb553a070322ca096e3 , < dbd20bb904ad5731aaca8d009367a930d6ada111 (git) Affected: a647a524a46736786c95cdb553a070322ca096e3 , < 09737db4c891eba25e6f6383a7c38afd4acc883f (git) Affected: a647a524a46736786c95cdb553a070322ca096e3 , < aa1b46dcdc7baaf5fec0be25782ef24b26aa209e (git) Affected: db60edbfff332a6a5477c367af8125f034570989 (git) Affected: 004b8f8a691205a93d9e80d98b786b2b97424d6e (git) Affected: 5.10.241 , < 5.11 (semver) Affected: 5.14.11 , < 5.15 (semver)
Linux	Linux	Affected: 5.15 Unaffected: 0 , < 5.15 (semver) Unaffected: 5.15.54 , ≤ 5.15.* (semver) Unaffected: 5.16.19 , ≤ 5.16.* (semver) Unaffected: 5.17.2 , ≤ 5.17.* (semver) Unaffected: 5.18 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblock: fix rq-qos breakage from skipping rq_qos_done_bio()\n\na647a524a467 (\"block: don\u0027t call rq_qos_ops-\u003edone_bio if the bio isn\u0027t\ntracked\") made bio_endio() skip rq_qos_done_bio() if BIO_TRACKED is not set.\nWhile this fixed a potential oops, it also broke blk-iocost by skipping the\ndone_bio callback for merged bios.\n\nBefore, whether a bio goes through rq_qos_throttle() or rq_qos_merge(),\nrq_qos_done_bio() would be called on the bio on completion with BIO_TRACKED\ndistinguishing the former from the latter. rq_qos_done_bio() is not called\nfor bios which wenth through rq_qos_merge(). This royally confuses\nblk-iocost as the merged bios never finish and are considered perpetually\nin-flight.\n\nOne reliably reproducible failure mode is an intermediate cgroup geting\nstuck active preventing its children from being activated due to the\nleaf-only rule, leading to loss of control. The following is from\nresctl-bench protection scenario which emulates isolating a web server like\nworkload from a memory bomb run on an iocost configuration which should\nyield a reasonable level of protection.\n\n  # cat /sys/block/nvme2n1/device/model\n  Samsung SSD 970 PRO 512GB\n  # cat /sys/fs/cgroup/io.cost.model\n  259:0 ctrl=user model=linear rbps=834913556 rseqiops=93622 rrandiops=102913 wbps=618985353 wseqiops=72325 wrandiops=71025\n  # cat /sys/fs/cgroup/io.cost.qos\n  259:0 enable=1 ctrl=user rpct=95.00 rlat=18776 wpct=95.00 wlat=8897 min=60.00 max=100.00\n  # resctl-bench -m 29.6G -r out.json run protection::scenario=mem-hog,loops=1\n  ...\n  Memory Hog Summary\n  ==================\n\n  IO Latency: R p50=242u:336u/2.5m p90=794u:1.4m/7.5m p99=2.7m:8.0m/62.5m max=8.0m:36.4m/350m\n              W p50=221u:323u/1.5m p90=709u:1.2m/5.5m p99=1.5m:2.5m/9.5m max=6.9m:35.9m/350m\n\n  Isolation and Request Latency Impact Distributions:\n\n                min   p01   p05   p10   p25   p50   p75   p90   p95   p99   max  mean stdev\n  isol%       15.90 15.90 15.90 40.05 57.24 59.07 60.01 74.63 74.63 90.35 90.35 58.12 15.82\n  lat-imp%        0     0     0     0     0  4.55 14.68 15.54 233.5 548.1 548.1 53.88 143.6\n\n  Result: isol=58.12:15.82% lat_imp=53.88%:143.6 work_csv=100.0% missing=3.96%\n\nThe isolation result of 58.12% is close to what this device would show\nwithout any IO control.\n\nFix it by introducing a new flag BIO_QOS_MERGED to mark merged bios and\ncalling rq_qos_done_bio() on them too. For consistency and clarity, rename\nBIO_TRACKED to BIO_QOS_THROTTLED. The flag checks are moved into\nrq_qos_done_bio() so that it\u0027s next to the code paths that set the flags.\n\nWith the patch applied, the above same benchmark shows:\n\n  # resctl-bench -m 29.6G -r out.json run protection::scenario=mem-hog,loops=1\n  ...\n  Memory Hog Summary\n  ==================\n\n  IO Latency: R p50=123u:84.4u/985u p90=322u:256u/2.5m p99=1.6m:1.4m/9.5m max=11.1m:36.0m/350m\n              W p50=429u:274u/995u p90=1.7m:1.3m/4.5m p99=3.4m:2.7m/11.5m max=7.9m:5.9m/26.5m\n\n  Isolation and Request Latency Impact Distributions:\n\n                min   p01   p05   p10   p25   p50   p75   p90   p95   p99   max  mean stdev\n  isol%       84.91 84.91 89.51 90.73 92.31 94.49 96.36 98.04 98.71 100.0 100.0 94.42  2.81\n  lat-imp%        0     0     0     0     0  2.81  5.73 11.11 13.92 17.53 22.61  4.10  4.68\n\n  Result: isol=94.42:2.81% lat_imp=4.10%:4.68 work_csv=58.34% missing=0%"
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CVE-2022-49444 (GCVE-0-2022-49444)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:12 – Updated: 2026-05-23 15:22

Title

module: fix [e_shstrndx].sh_size=0 OOB access

Summary

In the Linux kernel, the following vulnerability has been resolved: module: fix [e_shstrndx].sh_size=0 OOB access It is trivial to craft a module to trigger OOB access in this line: if (info->secstrings[strhdr->sh_size - 1] != '\0') { BUG: unable to handle page fault for address: ffffc90000aa0fff PGD 100000067 P4D 100000067 PUD 100066067 PMD 10436f067 PTE 0 Oops: 0000 [#1] PREEMPT SMP PTI CPU: 7 PID: 1215 Comm: insmod Not tainted 5.18.0-rc5-00007-g9bf578647087-dirty #10 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-4.fc34 04/01/2014 RIP: 0010:load_module+0x19b/0x2391 [rebased patch onto modules-next]

Severity

No CVSS data available.

Assigner

Linux mitre root

References

4 references

URL	Tags
https://git.kernel.org/stable/c/09cb6663618a74fe5…
https://git.kernel.org/stable/c/921630e2e5124a041…
https://git.kernel.org/stable/c/45a76414b6d8b8b39…
https://git.kernel.org/stable/c/391e982bfa632b831…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: ec2a29593c83ed71a7f16e3243941ebfcf75fdf6 , < 09cb6663618a74fe5572a4931ecbf098832e79ec (git) Affected: ec2a29593c83ed71a7f16e3243941ebfcf75fdf6 , < 921630e2e5124a04158129a8f22f4b425e61a858 (git) Affected: ec2a29593c83ed71a7f16e3243941ebfcf75fdf6 , < 45a76414b6d8b8b39c23fea53b9d20e831ae72a0 (git) Affected: ec2a29593c83ed71a7f16e3243941ebfcf75fdf6 , < 391e982bfa632b8315235d8be9c0a81374c6a19c (git) Affected: 05d891e76dde3e430c707dae7d85139794eeadbd (git) Affected: d802672c7f00963613f289579073ac519f0d306c (git) Affected: 214aa69cac91a723239118bbbfe77d5654ddff6b (git) Affected: 5.4.110 , < 5.5 (semver) Affected: 5.10.26 , < 5.11 (semver) Affected: 5.11.3 , < 5.12 (semver)
Linux	Linux	Affected: 5.12 Unaffected: 0 , < 5.12 (semver) Unaffected: 5.15.54 , ≤ 5.15.* (semver) Unaffected: 5.17.14 , ≤ 5.17.* (semver) Unaffected: 5.18.3 , ≤ 5.18.* (semver) Unaffected: 5.19 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/module/main.c"
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          "vendor": "Linux",
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              "version": "ec2a29593c83ed71a7f16e3243941ebfcf75fdf6",
              "versionType": "git"
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CVE-2022-49711 (GCVE-0-2022-49711)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:24 – Updated: 2026-05-11 19:05

Title

bus: fsl-mc-bus: fix KASAN use-after-free in fsl_mc_bus_remove()

Summary

In the Linux kernel, the following vulnerability has been resolved: bus: fsl-mc-bus: fix KASAN use-after-free in fsl_mc_bus_remove() In fsl_mc_bus_remove(), mc->root_mc_bus_dev->mc_io is passed to fsl_destroy_mc_io(). However, mc->root_mc_bus_dev is already freed in fsl_mc_device_remove(). Then reference to mc->root_mc_bus_dev->mc_io triggers KASAN use-after-free. To avoid the use-after-free, keep the reference to mc->root_mc_bus_dev->mc_io in a local variable and pass to fsl_destroy_mc_io(). This patch needs rework to apply to kernels older than v5.15.

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: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-02-27 18:14 UTC

CWE

CWE-416 - Use After Free

Assigner

Linux mitre root

References

4 references

URL	Tags
https://git.kernel.org/stable/c/720ab105df7bf3eee…
https://git.kernel.org/stable/c/ccd1751092341ac12…
https://git.kernel.org/stable/c/161b68b0a728377aa…
https://git.kernel.org/stable/c/928ea98252ad75118…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: f93627146f0e371093966ed3d44c065aa077cfb1 , < 720ab105df7bf3eee62d2bddd41526b29d07d045 (git) Affected: f93627146f0e371093966ed3d44c065aa077cfb1 , < ccd1751092341ac120a961835211f9f2e3735963 (git) Affected: f93627146f0e371093966ed3d44c065aa077cfb1 , < 161b68b0a728377aaa10a8e14c70e7734f3c9ff7 (git) Affected: f93627146f0e371093966ed3d44c065aa077cfb1 , < 928ea98252ad75118950941683893cf904541da9 (git)
Linux	Linux	Affected: 4.8 Unaffected: 0 , < 4.8 (semver) Unaffected: 5.10.248 , ≤ 5.10.* (semver) Unaffected: 5.15.49 , ≤ 5.15.* (semver) Unaffected: 5.18.6 , ≤ 5.18.* (semver) Unaffected: 5.19 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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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

oesa-2025-1337

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CVE-2022-49711 (GCVE-0-2022-49711)

Tags

Sightings

Nomenclature

Related by attack behaviour