| From bippy-1.2.0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@kernel.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2025-22046: uprobes/x86: Harden uretprobe syscall trampoline check |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| uprobes/x86: Harden uretprobe syscall trampoline check |
| |
| Jann reported a possible issue when trampoline_check_ip returns |
| address near the bottom of the address space that is allowed to |
| call into the syscall if uretprobes are not set up: |
| |
| https://lore.kernel.org/bpf/202502081235.5A6F352985@keescook/T/#m9d416df341b8fbc11737dacbcd29f0054413cbbf |
| |
| Though the mmap minimum address restrictions will typically prevent |
| creating mappings there, let's make sure uretprobe syscall checks |
| for that. |
| |
| The Linux kernel CVE team has assigned CVE-2025-22046 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.11 with commit ff474a78cef5cb5f32be52fe25b78441327a2e7c and fixed in 6.12.23 with commit c35771342e47d58ab9433f3be1c3c30f2c5fa4f3 |
| Issue introduced in 6.11 with commit ff474a78cef5cb5f32be52fe25b78441327a2e7c and fixed in 6.13.11 with commit b0065d712049c87e1994c6eac00c6a637e39b325 |
| Issue introduced in 6.11 with commit ff474a78cef5cb5f32be52fe25b78441327a2e7c and fixed in 6.14.2 with commit d4e48b8d59fe162938a5004ace698c847e6a3207 |
| Issue introduced in 6.11 with commit ff474a78cef5cb5f32be52fe25b78441327a2e7c and fixed in 6.15 with commit fa6192adc32f4fdfe5b74edd5b210e12afd6ecc0 |
| |
| 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-2025-22046 |
| 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/uprobes.c |
| include/linux/uprobes.h |
| kernel/events/uprobes.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/c35771342e47d58ab9433f3be1c3c30f2c5fa4f3 |
| https://git.kernel.org/stable/c/b0065d712049c87e1994c6eac00c6a637e39b325 |
| https://git.kernel.org/stable/c/d4e48b8d59fe162938a5004ace698c847e6a3207 |
| https://git.kernel.org/stable/c/fa6192adc32f4fdfe5b74edd5b210e12afd6ecc0 |
