CVE-2023-52464: EDAC/thunderx: Fix possible out-of-bounds string access
First published: Fri Feb 23 2024(Updated: )
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. ]
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <6.8 | 6.8 |
| Linux Kernel | >=4.12.0<4.19.306 | |
| Linux Kernel | >=4.20.0<5.4.268 | |
| Linux Kernel | >=5.5.0<5.10.209 | |
| Linux Kernel | >=5.11.0<5.15.148 | |
| Linux Kernel | >=5.16.0<6.1.75 | |
| Linux Kernel | >=6.2.0<6.6.14 | |
| Linux Kernel | >=6.7.0<6.7.2 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.119-1 6.12.10-1 6.12.11-1 |
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Reference Links
- https://git.kernel.org/stable/c/426fae93c01dffa379225eb2bd4d3cdc42c6eec5
- https://git.kernel.org/stable/c/475c58e1a471e9b873e3e39958c64a2d278275c8
- https://git.kernel.org/stable/c/5da3b6e7196f0b4f3728e4e25eb20233a9ddfaf6
- https://git.kernel.org/stable/c/6aa7865ba7ff7f0ede0035180fb3b9400ceb405a
- https://git.kernel.org/stable/c/700cf4bead80fac994dcc43ae1ca5d86d8959b21
- https://git.kernel.org/stable/c/71c17ee02538802ceafc830f0736aa35b564e601
- https://git.kernel.org/stable/c/9dbac9fdae6e3b411fc4c3fca3bf48f70609c398
- https://git.kernel.org/stable/c/e1c86511241588efffaa49556196f09a498d5057
- https://launchpad.net/bugs/cve/CVE-2023-52464
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2265812
- https://lore.kernel.org/linux-cve-announce/2024022336-CVE-2023-52464-b17c@gregkh/T/#u
- https://access.redhat.com/security/cve/CVE-2023-52464
- https://access.redhat.com/errata/RHSA-2024:4211
- https://access.redhat.com/errata/RHSA-2024:4352
- https://access.redhat.com/errata/RHSA-2024:9315
- https://bugzilla.redhat.com/show_bug.cgi?id=2265800
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-52464
- https://nvd.nist.gov/vuln/detail/CVE-2023-52464
- https://security-tracker.debian.org/tracker/CVE-2023-52464
- https://ubuntu.com/security/CVE-2023-52464
- https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
- https://git.kernel.org/linus/475c58e1a471e9b873e3e39958c64a2d278275c8
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