From bippy-d175d3acf727 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman To: Reply-to: , Subject: CVE-2024-35859: block: fix module reference leakage from bdev_open_by_dev error path Description =========== In the Linux kernel, the following vulnerability has been resolved: block: fix module reference leakage from bdev_open_by_dev error path At the time bdev_may_open() is called, module reference is grabbed already, hence module reference should be released if bdev_may_open() failed. This problem is found by code review. The Linux kernel CVE team has assigned CVE-2024-35859 to this issue. Affected and fixed versions =========================== Issue introduced in 6.8 with commit ed5cc702d311 and fixed in 6.8.9 with commit 0e9327c67410 Issue introduced in 6.8 with commit ed5cc702d311 and fixed in 6.9 with commit 9617cd6f24b2 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-2024-35859 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/bdev.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/0e9327c67410b129bf85e5c3a5aaea518328636f https://git.kernel.org/stable/c/9617cd6f24b294552a817f80f5225431ef67b540