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.
CVSS Details
- CVSS 3.1 Base Score: 8.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade kernel6.18-headersUpgrade kernel6.18-tools-develUpgrade kernel6.18-toolsUpgrade kernel6.18-develUpgrade kernel6.18-debuginfoUpgrade kernel6.18-debuginfo-common-x86_64Upgrade kernel6.18Upgrade kernel6.18-modules-extraUpgrade bpftool6.18-debuginfoUpgrade kernel6.18-modules-extra-commonUpgrade perf6.18-debuginfoUpgrade perf6.18Upgrade python3-perf6.18-debuginfoUpgrade kernel6.18-tools-debuginfoUpgrade kernel6.18-debuginfo-common-aarch64Upgrade bpftool6.18Upgrade kernel-livepatch-6.18.25-52.107Upgrade python3-perf6.18 | May 28, 2026 | Apr 22, 2026 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Apr 22, 2026 |
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