| 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-2024-53099: bpf: Check validity of link->type in bpf_link_show_fdinfo() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| bpf: Check validity of link->type in bpf_link_show_fdinfo() |
| |
| If a newly-added link type doesn't invoke BPF_LINK_TYPE(), accessing |
| bpf_link_type_strs[link->type] may result in an out-of-bounds access. |
| |
| To spot such missed invocations early in the future, checking the |
| validity of link->type in bpf_link_show_fdinfo() and emitting a warning |
| when such invocations are missed. |
| |
| The Linux kernel CVE team has assigned CVE-2024-53099 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 5.10.233 with commit 79f87a6ec39fb5968049a6775a528bf58b25c20a |
| Fixed in 5.15.176 with commit 24fec234d2ba9ca3c14e545ebe3fd6dcb47f074d |
| Fixed in 6.1.123 with commit 4e8074bb33d18f56af30a0252cb3606d27eb1c13 |
| Fixed in 6.6.62 with commit d5092b0a1aaf35d77ebd8d33384d7930bec5cb5d |
| Fixed in 6.11.9 with commit b3eb1b6a9f745d6941b345f0fae014dc8bb06d36 |
| Fixed in 6.12 with commit 8421d4c8762bd022cb491f2f0f7019ef51b4f0a7 |
| |
| 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-2024-53099 |
| 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: |
| kernel/bpf/syscall.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/79f87a6ec39fb5968049a6775a528bf58b25c20a |
| https://git.kernel.org/stable/c/24fec234d2ba9ca3c14e545ebe3fd6dcb47f074d |
| https://git.kernel.org/stable/c/4e8074bb33d18f56af30a0252cb3606d27eb1c13 |
| https://git.kernel.org/stable/c/d5092b0a1aaf35d77ebd8d33384d7930bec5cb5d |
| https://git.kernel.org/stable/c/b3eb1b6a9f745d6941b345f0fae014dc8bb06d36 |
| https://git.kernel.org/stable/c/8421d4c8762bd022cb491f2f0f7019ef51b4f0a7 |
