7

CVE-2024-41049

filelock: fix potential use-after-free in posix_lock_inode

In the Linux kernel, the following vulnerability has been resolved:

filelock: fix potential use-after-free in posix_lock_inode

Light Hsieh reported a KASAN UAF warning in trace_posix_lock_inode().
The request pointer had been changed earlier to point to a lock entry
that was added to the inode's list. However, before the tracepoint could
fire, another task raced in and freed that lock.

Fix this by moving the tracepoint inside the spinlock, which should
ensure that this doesn't happen.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.4.257 < 5.4.280
Linux ≫ Linux Kernel Version >= 5.10.197 < 5.10.222
Linux ≫ Linux Kernel Version >= 5.15.133 < 5.15.163
Linux ≫ Linux Kernel Version >= 6.1.55 < 6.1.100
Linux ≫ Linux Kernel Version >= 6.6 < 6.6.41
Linux ≫ Linux Kernel Version >= 6.7 < 6.9.10
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EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.26% 0.169
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7 1 5.9
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

https://git.kernel.org/stable/c/02a8964260756c70b20393ad4006948510ac9967
Patch
https://git.kernel.org/stable/c/116599f6a26906cf33f67975c59f0692ecf7e9b2
Patch
https://git.kernel.org/stable/c/1b3ec4f7c03d4b07bad70697d7e2f4088d2cfe92
Patch
https://git.kernel.org/stable/c/1cbbb3d9475c403ebedc327490c7c2b991398197
Patch
https://git.kernel.org/stable/c/432b06b69d1d354a171f7499141116536579eb6a
Patch
https://git.kernel.org/stable/c/5cb36e35bc10ea334810937990c2b9023dacb1b0
Patch
https://git.kernel.org/stable/c/7d4c14f4b511fd4c0dc788084ae59b4656ace58b
Patch
https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html