| 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-2023-52748: f2fs: avoid format-overflow warning |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| f2fs: avoid format-overflow warning |
| |
| With gcc and W=1 option, there's a warning like this: |
| |
| fs/f2fs/compress.c: In function ‘f2fs_init_page_array_cache’: |
| fs/f2fs/compress.c:1984:47: error: ‘%u’ directive writing between |
| 1 and 7 bytes into a region of size between 5 and 8 |
| [-Werror=format-overflow=] |
| 1984 | sprintf(slab_name, "f2fs_page_array_entry-%u:%u", MAJOR(dev), |
| MINOR(dev)); |
| | ^~ |
| |
| String "f2fs_page_array_entry-%u:%u" can up to 35. The first "%u" can up |
| to 4 and the second "%u" can up to 7, so total size is "24 + 4 + 7 = 35". |
| slab_name's size should be 35 rather than 32. |
| |
| The Linux kernel CVE team has assigned CVE-2023-52748 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.10 with commit 31083031709eea6530f0551d59eecdb2e68265ef and fixed in 5.10.202 with commit c041f5ddef00c731c541e00bc8ae97b8c84c682f |
| Issue introduced in 5.10 with commit 31083031709eea6530f0551d59eecdb2e68265ef and fixed in 5.15.140 with commit e4088d7d8f1123006d46a42edf51b8c960a58ef9 |
| Issue introduced in 5.10 with commit 31083031709eea6530f0551d59eecdb2e68265ef and fixed in 6.1.64 with commit 526dd7540a09ecf87b5f54f3ab4e0a2528f25a79 |
| Issue introduced in 5.10 with commit 31083031709eea6530f0551d59eecdb2e68265ef and fixed in 6.5.13 with commit 6fca08fd3085253b48fcb1bd243a0a5e18821a00 |
| Issue introduced in 5.10 with commit 31083031709eea6530f0551d59eecdb2e68265ef and fixed in 6.6.3 with commit 3eebe636cac53886bd5d1cdd55e082ec9e84983f |
| Issue introduced in 5.10 with commit 31083031709eea6530f0551d59eecdb2e68265ef and fixed in 6.7 with commit e0d4e8acb3789c5a8651061fbab62ca24a45c063 |
| |
| 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-2023-52748 |
| 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: |
| fs/f2fs/compress.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/c041f5ddef00c731c541e00bc8ae97b8c84c682f |
| https://git.kernel.org/stable/c/e4088d7d8f1123006d46a42edf51b8c960a58ef9 |
| https://git.kernel.org/stable/c/526dd7540a09ecf87b5f54f3ab4e0a2528f25a79 |
| https://git.kernel.org/stable/c/6fca08fd3085253b48fcb1bd243a0a5e18821a00 |
| https://git.kernel.org/stable/c/3eebe636cac53886bd5d1cdd55e082ec9e84983f |
| https://git.kernel.org/stable/c/e0d4e8acb3789c5a8651061fbab62ca24a45c063 |
