CVE-2026-31435netfs: Fix read abandonment during retry
Updated under an hour ago ()
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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
- 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Analyzed
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from ee4cdf7ba857a894ad1650d6ab77669cbbfa329e before 3e5fd8f53b575ff2188f82071da19c977ca56c41; from ee4cdf7ba857a894ad1650d6ab77669cbbfa329e before 8f2f2bd128a8d9edbc1e785760da54ada3df69b7; from ee4cdf7ba857a894ad1650d6ab77669cbbfa329e before 7e57523490cd2efb52b1ea97f2e0a74c0fb634cd | CNA record |
linux linux_kernel linux:linux_kernel | from 6.12 before 6.18.21; from 6.19 before 6.19.11; 7.0; 7.0; 7.0; 7.0; 7.0; 7.0 | NVD |
References
- https://git.kernel.org/stable/c/3e5fd8f53b575ff2188f82071da19c977ca56c41patch
- https://git.kernel.org/stable/c/8f2f2bd128a8d9edbc1e785760da54ada3df69b7patch
- https://git.kernel.org/stable/c/7e57523490cd2efb52b1ea97f2e0a74c0fb634cdpatch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.