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CVE-2026-52973

A flaw was found in the Linux kernel's futex subsystem. The need_futex_hash_allocate_default() function incorrectly relies on CLONE_THREAD semantics, which can lead to non-concurrency issues when memory allocations (mm->futex_ref pcpu allocations) are shared across CLONE_VM clones, excluding vfork(). This can result in a use-after-free vulnerability in futex_hash_put, a form of memory corruption. Such vulnerabilities can potentially lead to system instability or other security impacts.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:b040176e473d21c9201a57bb644ab6b47ded4e6a06b4869e8f8d69a7fc05c103
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 10 assertions

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:6"],"defaultStatus":"unaffected","packageName":"kernel","product":"Red Hat Enterprise Linux 6","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e0ebd0a3ac6028e19d13496791c5a4d83394824315878de3b6adc42dadcbdcb1 · sha256:2943ed69851e8e92… · /containers/adp/0/affected/2

{"defaultStatus":"unaffected","product":"Linux","programFiles":["kernel/fork.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"1dcd36420af2da5bd59306dba9caf78e3d248b1d","status":"affected","version":"d9b05321e21e4b218de4ce8a590bf375f58b6346","versionType":"git"},{"lessThan":"974ac49a9a068b0591a59f65c63eb06579a13091","status":"affected","version":"d9b05321e21e4b218de4ce8a590bf375f58b6346","versionType":"git"},{"lessThan":"ee9dce44362b2d8132c32964656ab6dff7dfbc6a","status":"affected","version":"d9b05321e21e4b218de4ce8a590bf375…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e0ebd0a3ac6028e19d13496791c5a4d83394824315878de3b6adc42dadcbdcb1 · sha256:2943ed69851e8e92… · /containers/cna/affected/0

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9"],"defaultStatus":"affected","packageName":"kernel-rt","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e0ebd0a3ac6028e19d13496791c5a4d83394824315878de3b6adc42dadcbdcb1 · sha256:2943ed69851e8e92… · /containers/adp/0/affected/7

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:enterprise_linux:9","cpe:/o:redhat:enterprise_linux:9"],"defaultStatus":"affected","packageName":"kernel","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"0:5.14.0-687.31.1.el9_8","versionType":"rpm"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e0ebd0a3ac6028e19d13496791c5a4d83394824315878de3b6adc42dadcbdcb1 · sha256:2943ed69851e8e92… · /containers/adp/0/affected/1

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10.2"],"defaultStatus":"affected","packageName":"kernel","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"0:6.12.0-211.39.1.el10_2","versionType":"rpm"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e0ebd0a3ac6028e19d13496791c5a4d83394824315878de3b6adc42dadcbdcb1 · sha256:2943ed69851e8e92… · /containers/adp/0/affected/0

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:7"],"defaultStatus":"unaffected","packageName":"kernel","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e0ebd0a3ac6028e19d13496791c5a4d83394824315878de3b6adc42dadcbdcb1 · sha256:2943ed69851e8e92… · /containers/adp/0/affected/3

{"defaultStatus":"affected","product":"Linux","programFiles":["kernel/fork.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.17"},{"lessThan":"6.17","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.33","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e0ebd0a3ac6028e19d13496791c5a4d83394824315878de3b6adc42dadcbdcb1 · sha256:2943ed69851e8e92… · /containers/cna/affected/1

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:7"],"defaultStatus":"unaffected","packageName":"kernel-rt","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e0ebd0a3ac6028e19d13496791c5a4d83394824315878de3b6adc42dadcbdcb1 · sha256:2943ed69851e8e92… · /containers/adp/0/affected/4

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"],"defaultStatus":"unaffected","packageName":"kernel","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e0ebd0a3ac6028e19d13496791c5a4d83394824315878de3b6adc42dadcbdcb1 · sha256:2943ed69851e8e92… · /containers/adp/0/affected/5

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"],"defaultStatus":"unaffected","packageName":"kernel-rt","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e0ebd0a3ac6028e19d13496791c5a4d83394824315878de3b6adc42dadcbdcb1 · sha256:2943ed69851e8e92… · /containers/adp/0/affected/6
cvss · 2 assertions

{"metric":{"attackComplexity":"HIGH","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e0ebd0a3ac6028e19d13496791c5a4d83394824315878de3b6adc42dadcbdcb1 · sha256:2943ed69851e8e92… · /containers/adp/0/metrics/1/cvssV3_1

{"metric":{"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"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e0ebd0a3ac6028e19d13496791c5a4d83394824315878de3b6adc42dadcbdcb1 · sha256:2943ed69851e8e92… · /containers/cna/metrics/0/cvssV3_1

Affected products and versions

10 source assertions
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:6"],"defaultStatus":"unaffected","packageName":"kernel","product":"Red Hat Enterprise Linux 6","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e0ebd0a3ac6028e19d13496791c5a4d83394824315878de3b6adc42dadcbdcb1 · sha256:2943ed69851e8e92… · /containers/adp/0/affected/2
{"defaultStatus":"unaffected","product":"Linux","programFiles":["kernel/fork.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"1dcd36420af2da5bd59306dba9caf78e3d248b1d","status":"affected","version":"d9b05321e21e4b218de4ce8a590bf375f58b6346","versionType":"git"},{"lessThan":"974ac49a9a068b0591a59f65c63eb06579a13091","status":"affected","version":"d9b05321e21e4b218de4ce8a590bf375f58b6346","versionType":"git"},{"lessThan":"ee9dce44362b2d8132c32964656ab6dff7dfbc6a","status":"affected","version":"d9b05321e21e4b218de4ce8a590bf375…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e0ebd0a3ac6028e19d13496791c5a4d83394824315878de3b6adc42dadcbdcb1 · sha256:2943ed69851e8e92… · /containers/cna/affected/0
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9"],"defaultStatus":"affected","packageName":"kernel-rt","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e0ebd0a3ac6028e19d13496791c5a4d83394824315878de3b6adc42dadcbdcb1 · sha256:2943ed69851e8e92… · /containers/adp/0/affected/7
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:enterprise_linux:9","cpe:/o:redhat:enterprise_linux:9"],"defaultStatus":"affected","packageName":"kernel","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"0:5.14.0-687.31.1.el9_8","versionType":"rpm"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e0ebd0a3ac6028e19d13496791c5a4d83394824315878de3b6adc42dadcbdcb1 · sha256:2943ed69851e8e92… · /containers/adp/0/affected/1
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10.2"],"defaultStatus":"affected","packageName":"kernel","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"0:6.12.0-211.39.1.el10_2","versionType":"rpm"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e0ebd0a3ac6028e19d13496791c5a4d83394824315878de3b6adc42dadcbdcb1 · sha256:2943ed69851e8e92… · /containers/adp/0/affected/0
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:7"],"defaultStatus":"unaffected","packageName":"kernel","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e0ebd0a3ac6028e19d13496791c5a4d83394824315878de3b6adc42dadcbdcb1 · sha256:2943ed69851e8e92… · /containers/adp/0/affected/3
{"defaultStatus":"affected","product":"Linux","programFiles":["kernel/fork.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.17"},{"lessThan":"6.17","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.33","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e0ebd0a3ac6028e19d13496791c5a4d83394824315878de3b6adc42dadcbdcb1 · sha256:2943ed69851e8e92… · /containers/cna/affected/1
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:7"],"defaultStatus":"unaffected","packageName":"kernel-rt","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e0ebd0a3ac6028e19d13496791c5a4d83394824315878de3b6adc42dadcbdcb1 · sha256:2943ed69851e8e92… · /containers/adp/0/affected/4
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"],"defaultStatus":"unaffected","packageName":"kernel","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e0ebd0a3ac6028e19d13496791c5a4d83394824315878de3b6adc42dadcbdcb1 · sha256:2943ed69851e8e92… · /containers/adp/0/affected/5
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"],"defaultStatus":"unaffected","packageName":"kernel-rt","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e0ebd0a3ac6028e19d13496791c5a4d83394824315878de3b6adc42dadcbdcb1 · sha256:2943ed69851e8e92… · /containers/adp/0/affected/6

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"HIGH","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e0ebd0a3ac6028e19d13496791c5a4d83394824315878de3b6adc42dadcbdcb1 · sha256:2943ed69851e8e92… · /containers/adp/0/metrics/1/cvssV3_1
{"metric":{"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"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e0ebd0a3ac6028e19d13496791c5a4d83394824315878de3b6adc42dadcbdcb1 · sha256:2943ed69851e8e92… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-825","description":"Expired Pointer Dereference","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e0ebd0a3ac6028e19d13496791c5a4d83394824315878de3b6adc42dadcbdcb1 · sha256:2943ed69851e8e92… · /containers/adp/0/problemTypes/0/descriptions/0

Source references

8 source assertions
{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:45114"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e0ebd0a3ac6028e19d13496791c5a4d83394824315878de3b6adc42dadcbdcb1 · sha256:2943ed69851e8e92… · /containers/adp/0/references/3
{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:47040"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e0ebd0a3ac6028e19d13496791c5a4d83394824315878de3b6adc42dadcbdcb1 · sha256:2943ed69851e8e92… · /containers/adp/0/references/4
{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-52973"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e0ebd0a3ac6028e19d13496791c5a4d83394824315878de3b6adc42dadcbdcb1 · sha256:2943ed69851e8e92… · /containers/adp/0/references/0
{"name":"RHBZ#2492413","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2492413"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e0ebd0a3ac6028e19d13496791c5a4d83394824315878de3b6adc42dadcbdcb1 · sha256:2943ed69851e8e92… · /containers/adp/0/references/1
{"url":"https://git.kernel.org/stable/c/1dcd36420af2da5bd59306dba9caf78e3d248b1d"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e0ebd0a3ac6028e19d13496791c5a4d83394824315878de3b6adc42dadcbdcb1 · sha256:2943ed69851e8e92… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/974ac49a9a068b0591a59f65c63eb06579a13091"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e0ebd0a3ac6028e19d13496791c5a4d83394824315878de3b6adc42dadcbdcb1 · sha256:2943ed69851e8e92… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/ee9dce44362b2d8132c32964656ab6dff7dfbc6a"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e0ebd0a3ac6028e19d13496791c5a4d83394824315878de3b6adc42dadcbdcb1 · sha256:2943ed69851e8e92… · /containers/cna/references/2
{"tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-52973.json"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e0ebd0a3ac6028e19d13496791c5a4d83394824315878de3b6adc42dadcbdcb1 · sha256:2943ed69851e8e92… · /containers/adp/0/references/2

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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