| 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-2024-26860: dm-integrity: fix a memory leak when rechecking the data |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| dm-integrity: fix a memory leak when rechecking the data |
| |
| Memory for the "checksums" pointer will leak if the data is rechecked |
| after checksum failure (because the associated kfree won't happen due |
| to 'goto skip_io'). |
| |
| Fix this by freeing the checksums memory before recheck, and just use |
| the "checksum_onstack" memory for storing checksum during recheck. |
| |
| The Linux kernel CVE team has assigned CVE-2024-26860 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.1.80 with commit 906414f4596469004632de29126c55751ed82c5e and fixed in 6.1.83 with commit 20e21c3c0195d915f33bc7321ee6b362177bf5bf |
| Issue introduced in 6.6.19 with commit d6824a28b244e8a750952848e4bd2167e1e9a17e and fixed in 6.6.23 with commit 338580a7fb9b0930bb38098007e89cc0fc496bf7 |
| Issue introduced in 6.7.7 with commit eb7b14a6a923c5678573c4d238c781cc83fcbc0f and fixed in 6.7.11 with commit 74abc2fe09691f3d836d8a54d599ca71f1e4287b |
| Issue introduced in 6.8 with commit c88f5e553fe38b2ffc4c33d08654e5281b297677 and fixed in 6.8.2 with commit 6d35654f03c35c273240d85ec67e3f2c3596c4e0 |
| Issue introduced in 6.8 with commit c88f5e553fe38b2ffc4c33d08654e5281b297677 and fixed in 6.9 with commit 55e565c42dce81a4e49c13262d5bc4eb4c2e588a |
| |
| 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-2024-26860 |
| 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/md/dm-integrity.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/20e21c3c0195d915f33bc7321ee6b362177bf5bf |
| https://git.kernel.org/stable/c/338580a7fb9b0930bb38098007e89cc0fc496bf7 |
| https://git.kernel.org/stable/c/74abc2fe09691f3d836d8a54d599ca71f1e4287b |
| https://git.kernel.org/stable/c/6d35654f03c35c273240d85ec67e3f2c3596c4e0 |
| https://git.kernel.org/stable/c/55e565c42dce81a4e49c13262d5bc4eb4c2e588a |
