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CVE-2026-43093

In the Linux kernel, the following vulnerability has been resolved: xsk: tighten UMEM headroom validation to account for tailroom and min frame The current headroom validation in xdp_umem_reg() could leave us with insufficient space dedicated to even receive minimum-sized ethernet frame. Furthermore if multi-buffer would come to play then skb_shared_info stored at the end of XSK frame would be corrupted. HW typically works with 128-aligned sizes so let us provide this value as bare minimum.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:2892942b072fa7b7f84d17c077fd2ba1d16a85413f1c7cc3dddeb39236c38b57
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"affected","product":"Linux","programFiles":["net/xdp/xdp_umem.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.7"},{"lessThan":"5.7","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.258","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.209","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.175","versionType":"semver"},{"lessThanOrEq…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e473761feda6d7f39e175ff011d8acf00797a77207af57ebda022386119fc3c0 · sha256:f7d6185ae2d58c12… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/xdp/xdp_umem.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"5f123bc278bf4e3283d8606321bebbfd299f4384","status":"affected","version":"99e3a236dd43d06c65af0a2ef9cb44306aef6e02","versionType":"git"},{"lessThan":"1a6051cd7e3e4c54ff3854a43b638b9292af5e67","status":"affected","version":"99e3a236dd43d06c65af0a2ef9cb44306aef6e02","versionType":"git"},{"lessThan":"8769708add9eadeea8041a9761771bb715a87104","status":"affected","version":"99e3a236dd43d06c65af0a2ef9c…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e473761feda6d7f39e175ff011d8acf00797a77207af57ebda022386119fc3c0 · sha256:f7d6185ae2d58c12… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["net/xdp/xdp_umem.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.7"},{"lessThan":"5.7","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.258","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.209","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.175","versionType":"semver"},{"lessThanOrEq…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e473761feda6d7f39e175ff011d8acf00797a77207af57ebda022386119fc3c0 · sha256:f7d6185ae2d58c12… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/xdp/xdp_umem.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"5f123bc278bf4e3283d8606321bebbfd299f4384","status":"affected","version":"99e3a236dd43d06c65af0a2ef9cb44306aef6e02","versionType":"git"},{"lessThan":"1a6051cd7e3e4c54ff3854a43b638b9292af5e67","status":"affected","version":"99e3a236dd43d06c65af0a2ef9cb44306aef6e02","versionType":"git"},{"lessThan":"8769708add9eadeea8041a9761771bb715a87104","status":"affected","version":"99e3a236dd43d06c65af0a2ef9c…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e473761feda6d7f39e175ff011d8acf00797a77207af57ebda022386119fc3c0 · sha256:f7d6185ae2d58c12… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"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:e473761feda6d7f39e175ff011d8acf00797a77207af57ebda022386119fc3c0 · sha256:f7d6185ae2d58c12… · /containers/cna/metrics/0/cvssV3_1

Source references

8 source assertions
{"url":"https://git.kernel.org/stable/c/0ec4d3f6e6934deb843b561ae048cd17218e5ad1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e473761feda6d7f39e175ff011d8acf00797a77207af57ebda022386119fc3c0 · sha256:f7d6185ae2d58c12… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/1a6051cd7e3e4c54ff3854a43b638b9292af5e67"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e473761feda6d7f39e175ff011d8acf00797a77207af57ebda022386119fc3c0 · sha256:f7d6185ae2d58c12… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/5f123bc278bf4e3283d8606321bebbfd299f4384"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e473761feda6d7f39e175ff011d8acf00797a77207af57ebda022386119fc3c0 · sha256:f7d6185ae2d58c12… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/6523bc1b40e69301f24c14338b762af4739d6d39"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e473761feda6d7f39e175ff011d8acf00797a77207af57ebda022386119fc3c0 · sha256:f7d6185ae2d58c12… · /containers/cna/references/6
{"url":"https://git.kernel.org/stable/c/8769708add9eadeea8041a9761771bb715a87104"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e473761feda6d7f39e175ff011d8acf00797a77207af57ebda022386119fc3c0 · sha256:f7d6185ae2d58c12… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/9ea6ba4f3195dcba6e8b3e7b2e748593b7cafb12"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e473761feda6d7f39e175ff011d8acf00797a77207af57ebda022386119fc3c0 · sha256:f7d6185ae2d58c12… · /containers/cna/references/5
{"url":"https://git.kernel.org/stable/c/a03975beb9f6af0d8ac051e30b2abeabe618414f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e473761feda6d7f39e175ff011d8acf00797a77207af57ebda022386119fc3c0 · sha256:f7d6185ae2d58c12… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/a315e022a72d95ef5f1d4e58e903cb492b0ad931"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e473761feda6d7f39e175ff011d8acf00797a77207af57ebda022386119fc3c0 · sha256:f7d6185ae2d58c12… · /containers/cna/references/7

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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