| 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-2024-35903: x86/bpf: Fix IP after emitting call depth accounting |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| x86/bpf: Fix IP after emitting call depth accounting |
| |
| Adjust the IP passed to `emit_patch` so it calculates the correct offset |
| for the CALL instruction if `x86_call_depth_emit_accounting` emits code. |
| Otherwise we will skip some instructions and most likely crash. |
| |
| The Linux kernel CVE team has assigned CVE-2024-35903 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.2 with commit b2e9dfe54be4d023124d588d6f03d16a9c0d2507 and fixed in 6.6.26 with commit 3f9d57c771656bfd651e22edcfdb5f60e62542d4 |
| Issue introduced in 6.2 with commit b2e9dfe54be4d023124d588d6f03d16a9c0d2507 and fixed in 6.8.5 with commit 81166178cf0a0062a22b1b3b5368183d39577028 |
| Issue introduced in 6.2 with commit b2e9dfe54be4d023124d588d6f03d16a9c0d2507 and fixed in 6.9 with commit 9d98aa088386aee3db1b7b60b800c0fde0654a4a |
| |
| 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-2024-35903 |
| 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: |
| arch/x86/net/bpf_jit_comp.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/3f9d57c771656bfd651e22edcfdb5f60e62542d4 |
| https://git.kernel.org/stable/c/81166178cf0a0062a22b1b3b5368183d39577028 |
| https://git.kernel.org/stable/c/9d98aa088386aee3db1b7b60b800c0fde0654a4a |
