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CVE-2026-46099

A flaw was found in the Linux kernel's IPv6 networking implementation, specifically within the `seg6` and `rpl` lwtunnels. A race condition can occur when handling destination cache entries, where a `NOREF` (no reference) destination object is used after it has been freed. This use-after-free vulnerability can lead to system instability or a denial of service (DoS) on systems configured with `PREEMPT_RT` (Preemptible Real-Time) kernel.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:2376c70fa20b158274a805cfb6d95990cd302b60a210fdc6141342089dd01ad2
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:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /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:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /containers/adp/0/affected/6

{"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:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /containers/adp/0/affected/2

{"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:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /containers/adp/0/affected/3

{"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:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /containers/adp/0/affected/4

{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/ipv6/rpl_iptunnel.c","net/ipv6/seg6_iptunnel.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"51fef5a7c4d160839199e941929456ba21ddf73c","status":"affected","version":"af4a2209b1344939eaac11f269c261d347cbc3ee","versionType":"git"},{"lessThan":"b258b849a580285a1692e782ebc902b44c884a71","status":"affected","version":"af4a2209b1344939eaac11f269c261d347cbc3ee","versionType":"git"},{"lessThan":"6bd17925bd6866027a6555db17905b9fc073d38d","status":"affected","versi…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["net/ipv6/rpl_iptunnel.c","net/ipv6/seg6_iptunnel.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.12"},{"lessThan":"4.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.209","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.175","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.140","versi…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /containers/cna/affected/1

{"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:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /containers/adp/0/affected/5

{"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:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /containers/adp/0/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:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /containers/adp/0/affected/7
cvss · 2 assertions

{"metric":{"baseScore":8.1,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/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:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /containers/cna/metrics/0/cvssV3_1

{"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:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /containers/adp/0/metrics/1/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:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /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:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /containers/adp/0/affected/6
{"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:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /containers/adp/0/affected/2
{"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:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /containers/adp/0/affected/3
{"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:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /containers/adp/0/affected/4
{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/ipv6/rpl_iptunnel.c","net/ipv6/seg6_iptunnel.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"51fef5a7c4d160839199e941929456ba21ddf73c","status":"affected","version":"af4a2209b1344939eaac11f269c261d347cbc3ee","versionType":"git"},{"lessThan":"b258b849a580285a1692e782ebc902b44c884a71","status":"affected","version":"af4a2209b1344939eaac11f269c261d347cbc3ee","versionType":"git"},{"lessThan":"6bd17925bd6866027a6555db17905b9fc073d38d","status":"affected","versi…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /containers/cna/affected/0
{"defaultStatus":"affected","product":"Linux","programFiles":["net/ipv6/rpl_iptunnel.c","net/ipv6/seg6_iptunnel.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.12"},{"lessThan":"4.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.209","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.175","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.140","versi…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /containers/cna/affected/1
{"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:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /containers/adp/0/affected/5
{"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:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /containers/adp/0/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:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /containers/adp/0/affected/7

Provider-owned CVSS observations

2 source assertions
{"metric":{"baseScore":8.1,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/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:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /containers/cna/metrics/0/cvssV3_1
{"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:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /containers/adp/0/metrics/1/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-911","description":"Improper Update of Reference Count","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /containers/adp/0/problemTypes/0/descriptions/0

Source references

11 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:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /containers/adp/0/references/3
{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-46099"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /containers/adp/0/references/0
{"name":"RHBZ#2481972","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2481972"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /containers/adp/0/references/1
{"url":"https://git.kernel.org/stable/c/51fef5a7c4d160839199e941929456ba21ddf73c"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/52f9db67f8f35f436366cf4980b4f0a2583d0ef0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/6bd17925bd6866027a6555db17905b9fc073d38d"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/9dd5481f960e337b81d7dfe429529495c1c481c0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /containers/cna/references/5
{"url":"https://git.kernel.org/stable/c/b258b849a580285a1692e782ebc902b44c884a71"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/b778b6d095421619c331fd2d7751143cd5387103"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/f9c52a6ba9780bd27e0bf4c044fd91c13c778b6e"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /containers/cna/references/6
{"tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46099.json"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a2ee8a4dbe9f1a2a0303d31ed7cc5871c3debfd9178b21d81281861e96fec56a · sha256:ff0ea52413a06e8a… · /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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