| 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-2024-43865: s390/fpu: Re-add exception handling in load_fpu_state() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| s390/fpu: Re-add exception handling in load_fpu_state() |
| |
| With the recent rewrite of the fpu code exception handling for the |
| lfpc instruction within load_fpu_state() was erroneously removed. |
| |
| Add it again to prevent that loading invalid floating point register |
| values cause an unhandled specification exception. |
| |
| The Linux kernel CVE team has assigned CVE-2024-43865 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.9 with commit 8c09871a950a3fe686e0e27fd4193179c5f74f37 and fixed in 6.10.4 with commit 494b14138201f07343e5488db6360c828fcc8cf6 |
| Issue introduced in 6.9 with commit 8c09871a950a3fe686e0e27fd4193179c5f74f37 and fixed in 6.11 with commit 4734406c39238cbeafe66f0060084caa3247ff53 |
| |
| 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-2024-43865 |
| 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/s390/kernel/fpu.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/494b14138201f07343e5488db6360c828fcc8cf6 |
| https://git.kernel.org/stable/c/4734406c39238cbeafe66f0060084caa3247ff53 |
