CVE-2023-52464
In the Linux kernel, the following vulnerability has been resolved: EDAC/thunderx: Fix possible out-of-bounds string access Enabling -Wstringop-overflow globally exposes a warning for a common bug in the usage of strncat(): drivers/edac/thunderx_edac.c:…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.27%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In the Linux kernel, the following vulnerability has been resolved: EDAC/thunderx: Fix possible out-of-bounds string access Enabling -Wstringop-overflow globally exposes a warning for a common bug in the usage of strncat(): drivers/edac/thunderx_edac.c: In function 'thunderx_ocx_com_threaded_isr': drivers/edac/thunderx_edac.c:1136:17: error: 'strncat' specified bound 1024 equals destination size [-Werror=stringop-overflow=] 1136 | strncat(msg, other, OCX_MESSAGE_SIZE); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ... 1145 | strncat(msg, other, OCX_MESSAGE_SIZE); ... 1150 | strncat(msg, other, OCX_MESSAGE_SIZE); ... Apparently the author of this driver expected strncat() to behave the way that strlcat() does, which uses the size of the destination buffer as its third argument rather than the length of the source buffer. The result is that there is no check on the size of the allocated buffer. Change it to strlcat(). [ bp: Trim compiler output, fixup commit message. ]
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.27% probability · 19th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/426fae93c01dffa379225eb2bd4d3cdc42c6eec5Patch
- https://git.kernel.org/stable/c/475c58e1a471e9b873e3e39958c64a2d278275c8Patch
- https://git.kernel.org/stable/c/5da3b6e7196f0b4f3728e4e25eb20233a9ddfaf6Patch
- https://git.kernel.org/stable/c/6aa7865ba7ff7f0ede0035180fb3b9400ceb405aPatch
- https://git.kernel.org/stable/c/700cf4bead80fac994dcc43ae1ca5d86d8959b21Patch
- https://git.kernel.org/stable/c/71c17ee02538802ceafc830f0736aa35b564e601Patch
- https://git.kernel.org/stable/c/9dbac9fdae6e3b411fc4c3fca3bf48f70609c398Patch
- https://git.kernel.org/stable/c/e1c86511241588efffaa49556196f09a498d5057Patch
- https://git.kernel.org/stable/c/426fae93c01dffa379225eb2bd4d3cdc42c6eec5Patch
- https://git.kernel.org/stable/c/475c58e1a471e9b873e3e39958c64a2d278275c8Patch
- https://git.kernel.org/stable/c/5da3b6e7196f0b4f3728e4e25eb20233a9ddfaf6Patch
- https://git.kernel.org/stable/c/6aa7865ba7ff7f0ede0035180fb3b9400ceb405aPatch
- https://git.kernel.org/stable/c/700cf4bead80fac994dcc43ae1ca5d86d8959b21Patch
- https://git.kernel.org/stable/c/71c17ee02538802ceafc830f0736aa35b564e601Patch
- https://git.kernel.org/stable/c/9dbac9fdae6e3b411fc4c3fca3bf48f70609c398Patch
- https://git.kernel.org/stable/c/e1c86511241588efffaa49556196f09a498d5057Patch
- https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.