| 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-2024-36964: fs/9p: only translate RWX permissions for plain 9P2000 |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| fs/9p: only translate RWX permissions for plain 9P2000 |
| |
| Garbage in plain 9P2000's perm bits is allowed through, which causes it |
| to be able to set (among others) the suid bit. This was presumably not |
| the intent since the unix extended bits are handled explicitly and |
| conditionally on .u. |
| |
| The Linux kernel CVE team has assigned CVE-2024-36964 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 4.19.314 with commit e90bc596a74bb905e0a45bf346038c3f9d1e868d |
| Fixed in 5.4.276 with commit df1962a199783ecd66734d563caf0fedecf08f96 |
| Fixed in 5.10.217 with commit 5a605930e19f451294bd838754f7d66c976a8a2c |
| Fixed in 5.15.159 with commit ad4f65328661392de74e3608bb736fedf3b67e32 |
| Fixed in 6.1.91 with commit ca9b5c81f0c918c63d73d962ed8a8e231f840bc8 |
| Fixed in 6.6.31 with commit e55c601af3b1223a84f9f27f9cdbd2af5e203bf3 |
| Fixed in 6.8.10 with commit 157d468e34fdd3cb1ddc07c2be32fb3b02826b02 |
| Fixed in 6.9 with commit cd25e15e57e68a6b18dc9323047fe9c68b99290b |
| |
| 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-2024-36964 |
| 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: |
| fs/9p/vfs_inode.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/e90bc596a74bb905e0a45bf346038c3f9d1e868d |
| https://git.kernel.org/stable/c/df1962a199783ecd66734d563caf0fedecf08f96 |
| https://git.kernel.org/stable/c/5a605930e19f451294bd838754f7d66c976a8a2c |
| https://git.kernel.org/stable/c/ad4f65328661392de74e3608bb736fedf3b67e32 |
| https://git.kernel.org/stable/c/ca9b5c81f0c918c63d73d962ed8a8e231f840bc8 |
| https://git.kernel.org/stable/c/e55c601af3b1223a84f9f27f9cdbd2af5e203bf3 |
| https://git.kernel.org/stable/c/157d468e34fdd3cb1ddc07c2be32fb3b02826b02 |
| https://git.kernel.org/stable/c/cd25e15e57e68a6b18dc9323047fe9c68b99290b |
