Description
In the Linux kernel, the following vulnerability has been resolved: exfat: fix double free in delayed_free The double free could happen in the following path. exfat_create_upcase_table() exfat_create_upcase_table() : return error exfat_free_upcase_table() : free ->vol_utbl exfat_load_default_upcase_table : return error exfat_kill_sb() delayed_free() exfat_free_upcase_table() <--------- double free This patch set ->vol_util as NULL after freeing it.
Affected products
linux: linux kernel; debian: debian linux
References8
- git.kernel.org/stable/c/13d8de1b6568dcc31a95534ced16bc0c9a67bc15 Patch
- git.kernel.org/stable/c/1f3d9724e16d62c7d42c67d6613b8512f2887c22 Patch
- git.kernel.org/stable/c/66e84439ec2af776ce749e8540f8fdd257774152 Patch
- git.kernel.org/stable/c/d3cef0e7a5c1aa6217c51faa9ce8ecac35d6e1fd Patch
- git.kernel.org/stable/c/29abaf93357f4a7d083cf399d4306999e20db31d
- git.kernel.org/stable/c/ac65f76db9b2ff3fbc9e198c0e9aaf81b111b7d0
- git.kernel.org/stable/c/ea27703eb0efbadcd45b9949526160ed90536a72
- lists.debian.org/debian-lts-announce/2025/10/msg00007.html Mailing ListThird Party Advisory
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 9 · as of 7 November 2026
- CWE
- CWE-415
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.