| From bippy-5f407fcff5a0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2023-52464: EDAC/thunderx: Fix possible out-of-bounds string access |
| |
| 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. ] |
| |
| The Linux kernel CVE team has assigned CVE-2023-52464 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.12 with commit 41003396f932d7f027725c7acebb6a7caa41dc3e and fixed in 4.19.306 with commit 71c17ee02538802ceafc830f0736aa35b564e601 |
| Issue introduced in 4.12 with commit 41003396f932d7f027725c7acebb6a7caa41dc3e and fixed in 5.4.268 with commit 5da3b6e7196f0b4f3728e4e25eb20233a9ddfaf6 |
| Issue introduced in 4.12 with commit 41003396f932d7f027725c7acebb6a7caa41dc3e and fixed in 5.10.209 with commit 6aa7865ba7ff7f0ede0035180fb3b9400ceb405a |
| Issue introduced in 4.12 with commit 41003396f932d7f027725c7acebb6a7caa41dc3e and fixed in 5.15.148 with commit 700cf4bead80fac994dcc43ae1ca5d86d8959b21 |
| Issue introduced in 4.12 with commit 41003396f932d7f027725c7acebb6a7caa41dc3e and fixed in 6.1.75 with commit 9dbac9fdae6e3b411fc4c3fca3bf48f70609c398 |
| Issue introduced in 4.12 with commit 41003396f932d7f027725c7acebb6a7caa41dc3e and fixed in 6.6.14 with commit e1c86511241588efffaa49556196f09a498d5057 |
| Issue introduced in 4.12 with commit 41003396f932d7f027725c7acebb6a7caa41dc3e and fixed in 6.7.2 with commit 426fae93c01dffa379225eb2bd4d3cdc42c6eec5 |
| Issue introduced in 4.12 with commit 41003396f932d7f027725c7acebb6a7caa41dc3e and fixed in 6.8 with commit 475c58e1a471e9b873e3e39958c64a2d278275c8 |
| |
| Please see https://www.kernel.org for a full list of currently supported |
| kernel versions by the kernel community. |
| |
| Unaffected versions might change over time as fixes are backported to |
| older supported kernel versions. The official CVE entry at |
| https://cve.org/CVERecord/?id=CVE-2023-52464 |
| will be updated if fixes are backported, please check that for the most |
| up to date information about this issue. |
| |
| |
| Affected files |
| ============== |
| |
| The file(s) affected by this issue are: |
| drivers/edac/thunderx_edac.c |
| |
| |
| Mitigation |
| ========== |
| |
| The Linux kernel CVE team recommends that you update to the latest |
| stable kernel version for this, and many other bugfixes. Individual |
| changes are never tested alone, but rather are part of a larger kernel |
| release. Cherry-picking individual commits is not recommended or |
| supported by the Linux kernel community at all. If however, updating to |
| the latest release is impossible, the individual changes to resolve this |
| issue can be found at these commits: |
| https://git.kernel.org/stable/c/71c17ee02538802ceafc830f0736aa35b564e601 |
| 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/9dbac9fdae6e3b411fc4c3fca3bf48f70609c398 |
| https://git.kernel.org/stable/c/e1c86511241588efffaa49556196f09a498d5057 |
| https://git.kernel.org/stable/c/426fae93c01dffa379225eb2bd4d3cdc42c6eec5 |
| https://git.kernel.org/stable/c/475c58e1a471e9b873e3e39958c64a2d278275c8 |
