DaystoPatch

Linux kernelExploited incident

Linux kernel watch_queue out-of-bounds write (CVE-2022-0995)

CVE-2022-0995High, CVSS 7.8In CISA's Known Exploited Vulnerabilities catalog since 26 Aug 2026

  • Exploited after a fix existed
FixedFixed for every supported version on the day it became public.

Response

Silence
not dated
First public report to first vendor statement
Exposure
0h
First public report to first fix
Follow-through
0h
First public report to a fix for every supported version
  • Vendor silent
  • Vendor statement, no fix
  • Fixed for some versions
  • Fixed when disclosed
  • Date only, no time of day

Timeline and evidence

Open a moment to see its source and archived quote.

  1. First public report

    CVE-2022-0995 record (CNA: redhat)CuratedQuote verified

    "datePublished":"2022-03-25T18:03:08.000Z"

    Red Hat CNA record. A public exploit repository (Bonfee/CVE-2022-0995) was created 2022-03-26, after the fix and the CVE.

    Recorded time
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    Curated. Found by a researcher, with a verbatim quote and link.
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    Found in the archived copy
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    sha256:3415fa45bc9256b7…
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    4 more sources for this moment
    CVE.org record CVE-2022-0995ClaimedQuote verified25 Mar 2022, 18:03 UTC

    An out-of-bounds (OOB) memory write flaw was found in the Linux kernel’s watch_queue event notification subsystem. This flaw can overwrite parts of the kernel state, potentially allowing a local

    CVE record published.

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    sha256:3415fa45bc9256b7…
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    Bluesky postClaimedQuote not checked yet16 Apr 2025, 15:40 UTC

    cause a denial of service or escalate their privileges.)(CVE-2022-0995)

    Earliest third-party post we hold.

    Source
    Bluesky post social
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    Not checked yet
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    No archived snapshot
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    CISA KEV (CVE-2022-0995)ClaimedQuote verified26 Aug 2026

    Linux Kernel Out-of-Bounds Write Vulnerability

    Added to CISA's KEV catalog on 2026-08-26.

    Recorded time
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    Claimed. The date the source gives.
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    Found in the archived copy
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    sha256:ef8fffede5c47200…
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    No, kept for the record
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    Mastodon postClaimedQuote not checked yet26 Aug 2026, 19:00 UTC

    🚨 [CISA-2026:0826] CISA Adds 6 Known Exploited Vulnerabilities to Catalog ( https:// secdb.nttzen.cloud/security-ad visory/detail/CISA-2026:0826 ) CISA has added 6 new vulnerabilities to its Known

    Earliest third-party post we hold.

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    Mastodon post social
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    Not checked yet
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  2. Vendor statement

    No public statement from the vendor found yet.

  3. First workaround

    No official mitigation found yet.

  4. First fix

    at disclosure

    kernel.org ChangeLog-5.10.106CuratedQuote verified

    Date: Wed Mar 16 14:16:03 2022 +0100

    Top entry of the Linux 5.10.106 ChangeLog is the release commit 'Linux 5.10.106' dated Wed Mar 16 14:16:03 2022 +0100 = 2022-03-16 13:16 UTC (commit author date). Stable releases 5.10.106, 5.15.29 and 5.16.15 were tagged on 2022-03-16 (commit c993ee0f9f81 'watch_queue: Fix filter limit check'); mainline 5.17 followed.

    Source
    kernel.org ChangeLog-5.10.106 vendor github
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    sha256:3fc4eb84b24b625d…
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  5. Fixed for all versions

    at disclosure

    kernel.org ChangeLog-5.16.15CuratedQuote verified

    Date: Wed Mar 16 14:26:52 2022 +0100

    Top entry of the Linux 5.16.15 ChangeLog is the release commit 'Linux 5.16.15' dated Wed Mar 16 14:26:52 2022 +0100 = 2022-03-16 13:26 UTC (commit author date). Last of the 2022-03-16 stable releases; branches before 5.8 are not affected.

    Source
    kernel.org ChangeLog-5.16.15 vendor github
    Recorded time
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    To the minute
    Origin
    Curated. Found by a researcher, with a verbatim quote and link.
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    Found in the archived copy
    Snapshot
    sha256:6c9065c07e9310fb…
    Used in metrics
    Yes
    Dispute this timestamp

Send this to your boss

No brief for this incident yet. We write one for every open incident and every critical bug exploited before a fix.

Affected products

  • Linux kernel 5.8 up to 5.10.105, 5.15.28, 5.16.14 (watch_queue)
How we built this timeline

Coordinated disclosure, exploited later: fixed in stable releases 16 Mar 2022, CVE published 25 Mar 2022, KEV-listed 26 Aug 2026. No Vendor statement moment is recorded: before the kernel became a CNA (2024) the upstream kernel published no security advisories, and the fixing releases do not describe the bug as a vulnerability.

Fixed-version mapping per branch is from the linuxkernelcves.com dataset (raw.githubusercontent.com/nluedtke/linux_kernel_cves data/stream_fixes.json) and NVD's CPE ranges; release dates are from the kernel.org ChangeLog files (git.kernel.org tag pages were used before the 23 Oct 2026 correction pass; robots.txt blocks them). NVD's CPE ranges list 5.16 fixed in 5.16.5, which conflicts with the dataset's 5.16.15; the dataset (which names the backport commit) is used.

CVSS 7.8 is the NVD / CISA-ADP score.

Related

Linux kernel report card