CVE-2026-31435

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

References

• https://git.kernel.org/stable/c/3e5fd8f53b575ff2188f82071da19c977ca56c41 ↗
• https://git.kernel.org/stable/c/8f2f2bd128a8d9edbc1e785760da54ada3df69b7 ↗
• https://git.kernel.org/stable/c/7e57523490cd2efb52b1ea97f2e0a74c0fb634cd ↗