CVE-2022-49967 (GCVE-0-2022-49967)

Vulnerability from cvelistv5 – Published: 2025-06-18 11:00 – Updated: 2025-06-18 11:00
VLAI?
Title
bpf: Fix a data-race around bpf_jit_limit.
Summary
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix a data-race around bpf_jit_limit. While reading bpf_jit_limit, it can be changed concurrently via sysctl, WRITE_ONCE() in __do_proc_doulongvec_minmax(). The size of bpf_jit_limit is long, so we need to add a paired READ_ONCE() to avoid load-tearing.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: ede95a63b5e84ddeea6b0c473b36ab8bfd8c6ce3 , < ba632ad0bacb13197a8f38e7526448974e87f292 (git)
Affected: ede95a63b5e84ddeea6b0c473b36ab8bfd8c6ce3 , < 0947ae1121083d363d522ff7518ee72b55bd8d29 (git)
Affected: c98446e1bab6253ddce7144cc2a91c400a323839 (git)
Affected: a1fe647042affe713a17243cd10e9b25f3d83948 (git)
Affected: 43caa29c99db5a41b204e8ced01b00e151335ca8 (git)
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    Linux Linux Affected: 4.20
Unaffected: 0 , < 4.20 (semver)
Unaffected: 5.19.8 , ≤ 5.19.* (semver)
Unaffected: 6.0 , ≤ * (original_commit_for_fix)
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{
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          "programFiles": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix a data-race around bpf_jit_limit.\n\nWhile reading bpf_jit_limit, it can be changed concurrently via sysctl,\nWRITE_ONCE() in __do_proc_doulongvec_minmax(). The size of bpf_jit_limit\nis long, so we need to add a paired READ_ONCE() to avoid load-tearing."
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      "providerMetadata": {
        "dateUpdated": "2025-06-18T11:00:31.782Z",
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          "url": "https://git.kernel.org/stable/c/0947ae1121083d363d522ff7518ee72b55bd8d29"
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    "datePublished": "2025-06-18T11:00:31.782Z",
    "dateReserved": "2025-06-18T10:57:27.384Z",
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    "state": "PUBLISHED"
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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