CVE-2026-31435 (GCVE-0-2026-31435)

Vulnerability from cvelistv5 – Published: 2026-04-22 13:53 – Updated: 2026-05-11 22:08
VLAI?
Title
netfs: Fix read abandonment during retry
Summary
In the Linux kernel, the following vulnerability has been resolved: netfs: Fix read abandonment during retry Under certain circumstances, all the remaining subrequests from a read request will get abandoned during retry. The abandonment process expects the 'subreq' variable to be set to the place to start abandonment from, but it doesn't always have a useful value (it will be uninitialised on the first pass through the loop and it may point to a deleted subrequest on later passes). Fix the first jump to "abandon:" to set subreq to the start of the first subrequest expected to need retry (which, in this abandonment case, turned out unexpectedly to no longer have NEED_RETRY set). Also clear the subreq pointer after discarding superfluous retryable subrequests to cause an oops if we do try to access it.
Severity ?
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: ee4cdf7ba857a894ad1650d6ab77669cbbfa329e , < 3e5fd8f53b575ff2188f82071da19c977ca56c41 (git)
Affected: ee4cdf7ba857a894ad1650d6ab77669cbbfa329e , < 8f2f2bd128a8d9edbc1e785760da54ada3df69b7 (git)
Affected: ee4cdf7ba857a894ad1650d6ab77669cbbfa329e , < 7e57523490cd2efb52b1ea97f2e0a74c0fb634cd (git)
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Linux Linux Affected: 6.12
Unaffected: 0 , < 6.12 (semver)
Unaffected: 6.18.21 , ≤ 6.18.* (semver)
Unaffected: 6.19.11 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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