| 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-2024-26946: kprobes/x86: Use copy_from_kernel_nofault() to read from unsafe address |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| kprobes/x86: Use copy_from_kernel_nofault() to read from unsafe address |
| |
| Read from an unsafe address with copy_from_kernel_nofault() in |
| arch_adjust_kprobe_addr() because this function is used before checking |
| the address is in text or not. Syzcaller bot found a bug and reported |
| the case if user specifies inaccessible data area, |
| arch_adjust_kprobe_addr() will cause a kernel panic. |
| |
| [ mingo: Clarified the comment. ] |
| |
| The Linux kernel CVE team has assigned CVE-2024-26946 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.18 with commit cc66bb91457827f62e2b6cb2518666820f0a6c48 and fixed in 6.1.84 with commit 6417684315087904fffe8966d27ca74398c57dd6 |
| Issue introduced in 5.18 with commit cc66bb91457827f62e2b6cb2518666820f0a6c48 and fixed in 6.6.24 with commit f13edd1871d4fb4ab829aff629d47914e251bae3 |
| Issue introduced in 5.18 with commit cc66bb91457827f62e2b6cb2518666820f0a6c48 and fixed in 6.7.12 with commit 20fdb21eabaeb8f78f8f701f56d14ea0836ec861 |
| Issue introduced in 5.18 with commit cc66bb91457827f62e2b6cb2518666820f0a6c48 and fixed in 6.8.3 with commit b69f577308f1070004cafac106dd1a44099e5483 |
| Issue introduced in 5.18 with commit cc66bb91457827f62e2b6cb2518666820f0a6c48 and fixed in 6.9 with commit 4e51653d5d871f40f1bd5cf95cc7f2d8b33d063b |
| |
| 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-2024-26946 |
| 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/kernel/kprobes/core.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/6417684315087904fffe8966d27ca74398c57dd6 |
| https://git.kernel.org/stable/c/f13edd1871d4fb4ab829aff629d47914e251bae3 |
| https://git.kernel.org/stable/c/20fdb21eabaeb8f78f8f701f56d14ea0836ec861 |
| https://git.kernel.org/stable/c/b69f577308f1070004cafac106dd1a44099e5483 |
| https://git.kernel.org/stable/c/4e51653d5d871f40f1bd5cf95cc7f2d8b33d063b |
