mm/vma: correctly unaccount on mmap_prepare() failure

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-98224
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-06 09:18:09 UTC
Updated2026-10-06 09:18:09 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: mm/vma: correctly unaccount on mmap_prepare() failure __mmap_setup() accounts memory for relevant mappings via: security_vm_enough_memory_mm() -> __vm_enough_memory() -> vm_acct_memory() If __mmap_setup() fails, this indicates that this accounting did not take place, and thus it's appropriate for __mmap_region() to jump to abort_munmap. However if call_mmap_prepare() fails, it also jumps there and any accounted memory is not correctly unaccounted. Fix this by handling each error separately.

Risk And Classification

EPSS: 0.001730000 probability, percentile 0.061500000 (date 2026-10-06)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected c84bf6dd2b836b49bb2662668ff1692350d28236 fb5400bff669c8bad3d4ec09287d9b461e89e5f1 git Not specified
CNA Linux Linux affected c84bf6dd2b836b49bb2662668ff1692350d28236 8fdc521d438fbf0d22c13d51d55d5dd82d7202b2 git Not specified
CNA Linux Linux affected c84bf6dd2b836b49bb2662668ff1692350d28236 6cc27d82196385fe06853319f74312a7d8019726 git Not specified
CNA Linux Linux affected 6.16 Not specified
CNA Linux Linux unaffected 6.16 semver Not specified
CNA Linux Linux unaffected 6.18.54 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.8 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc4 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/fb5400bff669c8bad3d4ec09287d9b461e89e5f1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/6cc27d82196385fe06853319f74312a7d8019726 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/8fdc521d438fbf0d22c13d51d55d5dd82d7202b2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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