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CVE-2026-52910

A flaw was found in the Linux kernel's Berkeley Packet Filter (BPF) reuseport mechanism. When a cBPF program is detached from a reuseport group, it is freed immediately without waiting for Read-Copy-Update (RCU) readers to complete. This can lead to a use-after-free condition, resulting in memory corruption (specifically, an out-of-bounds read) if another thread is simultaneously sending UDP packets to the reuseport group. This vulnerability can cause system instability and various other bugs.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:0b7b1ffb5cb65dcf897aa0e8068b6242d7e9f3afa6b3a64d91695c5dd1910c1b
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

{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/core/filter.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"08264d5bba0bdd3a79bc2984fee09286aba0c4eb","status":"affected","version":"538950a1b7527a0a52ccd9337e3fcd304f027f13","versionType":"git"},{"lessThan":"fec41484e7c2aa7ded44c541bba98872be937754","status":"affected","version":"538950a1b7527a0a52ccd9337e3fcd304f027f13","versionType":"git"},{"lessThan":"c3e3fddda6b5d9ba505d218b4055e7d8a282ac57","status":"affected","version":"538950a1b7527a0a52ccd9337e3f…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["net/core/filter.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.5"},{"lessThan":"4.5","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.259","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.210","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.176","versionType":"semver"},{"lessThanOrEqu…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /containers/cna/affected/1

{"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:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /containers/adp/0/affected/2

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10"],"defaultStatus":"affected","packageName":"kernel","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /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-rt","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /containers/adp/0/affected/3

{"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:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /containers/adp/0/affected/7

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

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /containers/adp/0/affected/4

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

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /containers/adp/0/affected/5

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

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /containers/adp/0/affected/1

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

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /containers/adp/0/affected/6
cvss · 2 assertions

{"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:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /containers/cna/metrics/0/cvssV3_1

{"metric":{"attackComplexity":"HIGH","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":6.4,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:H/PR:H/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:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /containers/adp/0/metrics/1/cvssV3_1

Affected products and versions

10 source assertions
{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/core/filter.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"08264d5bba0bdd3a79bc2984fee09286aba0c4eb","status":"affected","version":"538950a1b7527a0a52ccd9337e3fcd304f027f13","versionType":"git"},{"lessThan":"fec41484e7c2aa7ded44c541bba98872be937754","status":"affected","version":"538950a1b7527a0a52ccd9337e3fcd304f027f13","versionType":"git"},{"lessThan":"c3e3fddda6b5d9ba505d218b4055e7d8a282ac57","status":"affected","version":"538950a1b7527a0a52ccd9337e3f…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /containers/cna/affected/0
{"defaultStatus":"affected","product":"Linux","programFiles":["net/core/filter.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.5"},{"lessThan":"4.5","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.259","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.210","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.176","versionType":"semver"},{"lessThanOrEqu…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /containers/cna/affected/1
{"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:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /containers/adp/0/affected/2
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10"],"defaultStatus":"affected","packageName":"kernel","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /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-rt","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /containers/adp/0/affected/3
{"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:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /containers/adp/0/affected/7
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"],"defaultStatus":"affected","packageName":"kernel","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /containers/adp/0/affected/4
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"],"defaultStatus":"affected","packageName":"kernel-rt","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /containers/adp/0/affected/5
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:6"],"defaultStatus":"unknown","packageName":"kernel","product":"Red Hat Enterprise Linux 6","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /containers/adp/0/affected/1
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9"],"defaultStatus":"affected","packageName":"kernel","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /containers/adp/0/affected/6

Provider-owned CVSS observations

2 source assertions
{"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:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /containers/cna/metrics/0/cvssV3_1
{"metric":{"attackComplexity":"HIGH","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":6.4,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:H/PR:H/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:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /containers/adp/0/metrics/1/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-364","description":"Signal Handler Race Condition","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /containers/adp/0/problemTypes/0/descriptions/0

Source references

11 source assertions
{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-52910"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /containers/adp/0/references/0
{"name":"RHBZ#2490779","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2490779"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /containers/adp/0/references/1
{"url":"https://git.kernel.org/stable/c/08264d5bba0bdd3a79bc2984fee09286aba0c4eb"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/18fc650ccd7fe3376eca89203668cfb8268f60df"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /containers/cna/references/7
{"url":"https://git.kernel.org/stable/c/298db6167f81e9c470a57cf652e4e47757b4293e"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/87dfb977bdb6eaa47e9993a34e18f44970f88b1f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /containers/cna/references/5
{"url":"https://git.kernel.org/stable/c/90e47dc5c572d1c73971ac51c7428803f42b78eb"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /containers/cna/references/6
{"url":"https://git.kernel.org/stable/c/c3e3fddda6b5d9ba505d218b4055e7d8a282ac57"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/f8b8f1d4bb76098e87b8269a0631019648330e6d"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/fec41484e7c2aa7ded44c541bba98872be937754"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /containers/cna/references/1
{"tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-52910.json"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ddb0ac9c8d22f6f58533a1f6648b48c0d933bf06431bafc558777969d964b01b · sha256:058961ea8a397e3d… · /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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