| 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-2024-35904: selinux: avoid dereference of garbage after mount failure |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| selinux: avoid dereference of garbage after mount failure |
| |
| In case kern_mount() fails and returns an error pointer return in the |
| error branch instead of continuing and dereferencing the error pointer. |
| |
| While on it drop the never read static variable selinuxfs_mount. |
| |
| The Linux kernel CVE team has assigned CVE-2024-35904 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.17 with commit 0619f0f5e36f12e100ef294f5980cfe7c93ff23e and fixed in 6.6.26 with commit 477ed6789eb9f3f4d3568bb977f90c863c12724e |
| Issue introduced in 4.17 with commit 0619f0f5e36f12e100ef294f5980cfe7c93ff23e and fixed in 6.8.5 with commit 68784a5d01b8868ff85a7926676b6729715fff3c |
| Issue introduced in 4.17 with commit 0619f0f5e36f12e100ef294f5980cfe7c93ff23e and fixed in 6.9 with commit 37801a36b4d68892ce807264f784d818f8d0d39b |
| |
| 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-2024-35904 |
| 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: |
| security/selinux/selinuxfs.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/477ed6789eb9f3f4d3568bb977f90c863c12724e |
| https://git.kernel.org/stable/c/68784a5d01b8868ff85a7926676b6729715fff3c |
| https://git.kernel.org/stable/c/37801a36b4d68892ce807264f784d818f8d0d39b |
