CVE-2026-23259

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 36/100
Published: 2026-03-18 Modified: 2026-11-05 First seen: 2026-11-05 Status: active

Attack Surface

Low Complexity No Interaction

CVSS Vector Breakdown

AV: Local
AC: Low
PR: Low
UI: None
S: Unchanged
C: None
I: None
A: High

Description

In the Linux kernel, the following vulnerability has been resolved: io_uring/rw: free potentially allocated iovec on cache put failure If a read/write request goes through io_req_rw_cleanup() and has an allocated iovec attached and fails to put to the rw_cache, then it may end up with an unaccounted iovec pointer. Have io_rw_recycle() return whether it recycled the request or not, and use that to gauge whether to free a potential iovec or not.

Affected Software (11)

VendorProductVersion
Linux Linux a9165b83c1937eeed1f0c731468216d6371d647f < 41cda4c66846c3bfcdeaf28444ccabbb55e64cf1
Linux Linux a9165b83c1937eeed1f0c731468216d6371d647f < 1d5f2329ab4df65c2ee011b986d8a6e05ad0f67c
Linux Linux a9165b83c1937eeed1f0c731468216d6371d647f < 4b9748055457ac3a0710bf210c229d01ea1b01b9
Linux Linux 6.10
linux linux_kernel 6.10 – 6.18.10
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19

Bug Bounty Relevance

36 / 100
✓ Low complexity
✓ No user interaction

CVSS Score

5.5 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.18%
Raw Score 0.001810
Percentile 7.7%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00181
2026-11-13
0.00181
2026-11-12
0.00169
2026-11-10
0.00169
2026-11-09
0.00169
2026-11-08
0.00169
2026-11-07
0.00169
2026-11-06
0.00169
2026-11-05
0.00169

Intelligence Sources

mitre ref →
nvd ref →