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CVE-2024-42068 (GCVE-0-2024-42068)

Vulnerability from cvelistv5 – Published: 2024-07-29 15:52 – Updated: 2026-08-05 11:35
VLAI
Title
bpf: Take return from set_memory_ro() into account with bpf_prog_lock_ro()
Summary
In the Linux kernel, the following vulnerability has been resolved: bpf: Take return from set_memory_ro() into account with bpf_prog_lock_ro() set_memory_ro() can fail, leaving memory unprotected. Check its return and take it into account as an error.
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 2024-09-10 16:19 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 60a3b2253c413cf601783b070507d7dd6620c954 , < a359696856ca9409fb97655c5a8ef0f549cb6e03 (git)
Affected: 60a3b2253c413cf601783b070507d7dd6620c954 , < e4f602e3ff749ba770bf8ff10196e18358de6720 (git)
Affected: 60a3b2253c413cf601783b070507d7dd6620c954 , < 05412471beba313ecded95aa17b25fe84bb2551a (git)
Affected: 60a3b2253c413cf601783b070507d7dd6620c954 , < 7d2cc63eca0c993c99d18893214abf8f85d566d8 (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.18
Unaffected: 0 , < 3.18 (semver)
Unaffected: 5.15.162 , ≤ 5.15.* (semver)
Unaffected: 6.1.97 , ≤ 6.1.* (semver)
Unaffected: 6.9.8 , ≤ 6.9.* (semver)
Unaffected: 6.10 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-252"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-08-04T22:43:09+00:00",
      "cve": "CVE-2024-42068",
      "id": "CVE-2024-42068",
      "initial_release_date": "2024-07-29T00:00:00+00:00",
      "product_status:known_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: bpf: Take return from set_memory_ro() into account with bpf_prog_lock_ro()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-42068.json",
      "version": "3"
    },
    "vulnrichment": {
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              "dateUpdated": "2025-11-03T22:01:05.442Z",
              "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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            "references": [
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                "url": "https://git.kernel.org/stable/c/a359696856ca9409fb97655c5a8ef0f549cb6e03"
              },
              {
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                "url": "https://git.kernel.org/stable/c/e4f602e3ff749ba770bf8ff10196e18358de6720"
              },
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                "tags": [
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                "url": "https://git.kernel.org/stable/c/fdd411af8178edc6b7bf260f8fa4fba1bedd0a6d"
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                "url": "https://git.kernel.org/stable/c/7d2cc63eca0c993c99d18893214abf8f85d566d8"
              },
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                "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
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            ],
            "title": "CVE Program Container"
          },
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2024-42068",
                    "options": [
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                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
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                      {
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                    "timestamp": "2024-09-10T16:19:52.600102Z",
                    "version": "2.0.3"
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              "versions": [
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                  "version": "3.18"
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                {
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                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
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                  "status": "unaffected",
                  "version": "5.15.162",
                  "versionType": "semver"
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                  "status": "unaffected",
                  "version": "6.1.97",
                  "versionType": "semver"
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                  "status": "unaffected",
                  "version": "6.9.8",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.10",
                  "versionType": "original_commit_for_fix"
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                  "value": "AV:L - BPF program loading is reachable only through local syscalls \u2014 `setsockopt(SO_ATTACH_FILTER)`, `seccomp()`/`prctl(PR_SET_SECCOMP)`, and `bpf(BPF_PROG_LOAD)`. No remote peer can drive `bpf_prog_select_runtime()`.\nAC:L - A local attacker can repeatedly load interpreted BPF programs in a loop while driving the machine into reclaim pressure, which is the condition that makes `split_large_page()`\u0027s page-table allocation fail and return -ENOMEM out of `set_memory_ro()`. Memory pressure is attacker-influenceable rather than a state outside the attacker\u0027s control, so the higher-severity value applies.\nPR:L - `SO_ATTACH_FILTER` in net/core/sock.c:1465 has no capability check at all, and the seccomp path is gated only by `no_new_privs`, which any unprivileged task can set \u2014 so an ordinary user, including one inside a container or sandbox, reaches the vulnerable code with zero capabilities.\nUI:N - The attacker loads and attaches the BPF program entirely within its own process; no other user or victim action is involved.\nS:U - The unprotected memory and the resulting compromise are both within the kernel\u0027s own security authority \u2014 this is standard kernel privilege escalation, not a hypervisor or IOMMU boundary crossing.\nC:H - Kernel memory that the hardening design requires to be read-only remains writable, and the introducing commit 60a3b2253c41 states that a modifiable interpreter image yields \"arbitrary read/write memory access\"; rewriting the `insnsi[]` stream turns the BPF interpreter into an arbitrary kernel-memory read primitive.\nI:H - The unprotected region contains both the executed eBPF bytecode and the `bpf_func` function pointer, so the lost `set_memory_ro()` gives an attacker a path to arbitrary kernel writes and arbitrary function calls \u2014 exactly the integrity guarantee this code exists to enforce.\nA:H - A BPF program whose instruction stream or `bpf_func` pointer can be altered executes attacker-chosen kernel control flow, trivially producing an oops or panic, so the availability impact of the lost protection is a full kernel crash."
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        "datePublished": "2024-07-29T15:52:32.538Z",
        "dateReserved": "2024-07-29T15:50:41.168Z",
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


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.