| 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-2024-35925: block: prevent division by zero in blk_rq_stat_sum() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| block: prevent division by zero in blk_rq_stat_sum() |
| |
| The expression dst->nr_samples + src->nr_samples may |
| have zero value on overflow. It is necessary to add |
| a check to avoid division by zero. |
| |
| Found by Linux Verification Center (linuxtesting.org) with Svace. |
| |
| The Linux kernel CVE team has assigned CVE-2024-35925 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 4.19.312 with commit 6a55dab4ac956deb23690eedd74e70b892a378e7 |
| Fixed in 5.4.274 with commit edd073c78d2bf48c5b8bf435bbc3d61d6e7c6c14 |
| Fixed in 5.10.215 with commit b0cb5564c3e8e0ee0a2d28c86fa7f02e82d64c3c |
| Fixed in 5.15.155 with commit 21e7d72d0cfcbae6042d498ea2e6f395311767f8 |
| Fixed in 6.1.86 with commit 512a01da7134bac8f8b373506011e8aaa3283854 |
| Fixed in 6.6.27 with commit 5f7fd6aa4c4877d77133ea86c14cf256f390b2fe |
| Fixed in 6.8.6 with commit 98ddf2604ade2d954bf5ec193600d5274a43fd68 |
| Fixed in 6.9 with commit 93f52fbeaf4b676b21acfe42a5152620e6770d02 |
| |
| 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-2024-35925 |
| 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: |
| block/blk-stat.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/6a55dab4ac956deb23690eedd74e70b892a378e7 |
| https://git.kernel.org/stable/c/edd073c78d2bf48c5b8bf435bbc3d61d6e7c6c14 |
| https://git.kernel.org/stable/c/b0cb5564c3e8e0ee0a2d28c86fa7f02e82d64c3c |
| https://git.kernel.org/stable/c/21e7d72d0cfcbae6042d498ea2e6f395311767f8 |
| https://git.kernel.org/stable/c/512a01da7134bac8f8b373506011e8aaa3283854 |
| https://git.kernel.org/stable/c/5f7fd6aa4c4877d77133ea86c14cf256f390b2fe |
| https://git.kernel.org/stable/c/98ddf2604ade2d954bf5ec193600d5274a43fd68 |
| https://git.kernel.org/stable/c/93f52fbeaf4b676b21acfe42a5152620e6770d02 |
