| 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-2023-52458: block: add check that partition length needs to be aligned with block size |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| block: add check that partition length needs to be aligned with block size |
| |
| Before calling add partition or resize partition, there is no check |
| on whether the length is aligned with the logical block size. |
| If the logical block size of the disk is larger than 512 bytes, |
| then the partition size maybe not the multiple of the logical block size, |
| and when the last sector is read, bio_truncate() will adjust the bio size, |
| resulting in an IO error if the size of the read command is smaller than |
| the logical block size.If integrity data is supported, this will also |
| result in a null pointer dereference when calling bio_integrity_free. |
| |
| The Linux kernel CVE team has assigned CVE-2023-52458 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 5.10.215 with commit 8f6dfa1f1efe6dcca2d43e575491d8fcbe922f62 |
| Fixed in 5.15.148 with commit 5010c27120962c85d2f421d2cf211791c9603503 |
| Fixed in 6.1.75 with commit ef31cc87794731ffcb578a195a2c47d744e25fb8 |
| Fixed in 6.6.14 with commit cb16cc1abda18a9514106d2ac8c8d7abc0be5ed8 |
| Fixed in 6.7.2 with commit bcdc288e7bc008daf38ef0401b53e4a8bb61bbe5 |
| Fixed in 6.8 with commit 6f64f866aa1ae6975c95d805ed51d7e9433a0016 |
| |
| 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-2023-52458 |
| 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/ioctl.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/8f6dfa1f1efe6dcca2d43e575491d8fcbe922f62 |
| https://git.kernel.org/stable/c/5010c27120962c85d2f421d2cf211791c9603503 |
| https://git.kernel.org/stable/c/ef31cc87794731ffcb578a195a2c47d744e25fb8 |
| https://git.kernel.org/stable/c/cb16cc1abda18a9514106d2ac8c8d7abc0be5ed8 |
| https://git.kernel.org/stable/c/bcdc288e7bc008daf38ef0401b53e4a8bb61bbe5 |
| https://git.kernel.org/stable/c/6f64f866aa1ae6975c95d805ed51d7e9433a0016 |
