selinux: fix BPF token permission checks

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Summary

CVECVE-2026-99129
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-28 11:17:32 UTC
Updated2026-10-28 11:17:32 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: selinux: fix BPF token permission checks Avoid multiple lookups of the bpffs creator SID using the token's file descriptor when the same information can be found via the resolved path/dentry (in selinux_bpf_token_create()) or the token itself (in selinux_bpf_map_create() and selinux_bpf_prog_load()). Not only does this simplify the code, it avoids potential TOCTOU issues if the user changes the token file descriptor passed into the kernel.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 5473a722f782f79f96b4691400d681c01fcacc2f e1ef306ba20eb13099ca4463527890df67619405 git Not specified
CNA Linux Linux affected 5473a722f782f79f96b4691400d681c01fcacc2f 77d499e61d36e883a6ad1f10afe05f556aa7e0cc git Not specified
CNA Linux Linux affected 7.0 Not specified
CNA Linux Linux unaffected 7.0 semver Not specified
CNA Linux Linux unaffected 7.2.13 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/77d499e61d36e883a6ad1f10afe05f556aa7e0cc 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/e1ef306ba20eb13099ca4463527890df67619405 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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