Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: kheaders: Use array declaration instead of char Under CONFIG_FORTIFY_SOURCE, memcpy() will check the size of destination and source buffers. Defining kernel_headers_data as "char" would trip this check. Since these addresses are treated as byte arrays, define them as arrays (as done everywhere else). This was seen with: $ cat /sys/kernel/kheaders.tar.xz >> /dev/null detected buffer overflow in memcpy kernel BUG at lib/string_helpers.c:1027! ... RIP: 0010:fortify_panic+0xf/0x20 [...] Call Trace: <TASK> ikheaders_read+0x45/0x50 [kheaders] kernfs_fop_read_iter+0x1a4/0x2f0 ...
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 43d8ce9d65a54846d378545770991e65838981e0 before 719459877d58c8aced5845c1e5b98d8d87d09197; affected 43d8ce9d65a54846d378545770991e65838981e0 before fcd2da2e6bf2640a31a2a5b118b50dc3635c707b; affected 43d8ce9d65a54846d378545770991e65838981e0 before 4a07d2d511e2703efd4387891d49e0326f1157f3; affected 43d8ce9d65a54846d378545770991e65838981e0 before b9f6845a492de20679b84bda6b08be347c5819da; affected 43d8ce9d65a54846d378545770991e65838981e0 before d6d1af6b8611801b585c53c0cc63626c8d339e96; affected 43d8ce9d65a54846d378545770991e65838981e0 before 82d2e01b95c439fe55fab5e04fc83387c42d3a48; affected 43d8ce9d65a54846d378545770991e65838981e0 before b69edab47f1da8edd8e7bfdf8c70f51a2a5d89fb |
| Linux / Linux | affected 5.2; unaffected 0 before 5.2; unaffected 5.4.243 through 5.4.*; unaffected 5.10.180 through 5.10.*; unaffected 5.15.111 through 5.15.*; unaffected 6.1.28 through 6.1.*; unaffected 6.2.15 through 6.2.*; unaffected 6.3.2 through 6.3.*; unaffected 6.4 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/719459877d58c8aced5845c1e5b98d8d87d09197
- https://git.kernel.org/stable/c/fcd2da2e6bf2640a31a2a5b118b50dc3635c707b
- https://git.kernel.org/stable/c/4a07d2d511e2703efd4387891d49e0326f1157f3
- https://git.kernel.org/stable/c/b9f6845a492de20679b84bda6b08be347c5819da
- https://git.kernel.org/stable/c/d6d1af6b8611801b585c53c0cc63626c8d339e96
- https://git.kernel.org/stable/c/82d2e01b95c439fe55fab5e04fc83387c42d3a48
- https://git.kernel.org/stable/c/b69edab47f1da8edd8e7bfdf8c70f51a2a5d89fb