| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <2025101334-CVE-2025-39964-7964@gregkh> Date: Mon, 13 Oct 2025 15:48:35 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...nel.org> Subject: CVE-2025-39964: crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg From: Greg Kroah-Hartman <gregkh@...nel.org> Description =========== In the Linux kernel, the following vulnerability has been resolved: crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg Issuing two writes to the same af_alg socket is bogus as the data will be interleaved in an unpredictable fashion. Furthermore, concurrent writes may create inconsistencies in the internal socket state. Disallow this by adding a new ctx->write field that indiciates exclusive ownership for writing. The Linux kernel CVE team has assigned CVE-2025-39964 to this issue. Affected and fixed versions =========================== Issue introduced in 2.6.38 with commit 8ff590903d5fc7f5a0a988c38267a3d08e6393a2 and fixed in 5.10.245 with commit 0f28c4adbc4a97437874c9b669fd7958a8c6d6ce Issue introduced in 2.6.38 with commit 8ff590903d5fc7f5a0a988c38267a3d08e6393a2 and fixed in 5.15.194 with commit e4c1ec11132ec466f7362a95f36a506ce4dc08c9 Issue introduced in 2.6.38 with commit 8ff590903d5fc7f5a0a988c38267a3d08e6393a2 and fixed in 6.1.154 with commit 1f323a48e9b5ebfe6dc7d130fdf5c3c0e92a07c8 Issue introduced in 2.6.38 with commit 8ff590903d5fc7f5a0a988c38267a3d08e6393a2 and fixed in 6.6.108 with commit 7c4491b5644e3a3708f3dbd7591be0a570135b84 Issue introduced in 2.6.38 with commit 8ff590903d5fc7f5a0a988c38267a3d08e6393a2 and fixed in 6.12.49 with commit 9aee87da5572b3a14075f501752e209801160d3d Issue introduced in 2.6.38 with commit 8ff590903d5fc7f5a0a988c38267a3d08e6393a2 and fixed in 6.16.9 with commit 45bcf60fe49b37daab1acee57b27211ad1574042 Issue introduced in 2.6.38 with commit 8ff590903d5fc7f5a0a988c38267a3d08e6393a2 and fixed in 6.17 with commit 1b34cbbf4f011a121ef7b2d7d6e6920a036d5285 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-2025-39964 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: crypto/af_alg.c include/crypto/if_alg.h 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/0f28c4adbc4a97437874c9b669fd7958a8c6d6ce https://git.kernel.org/stable/c/e4c1ec11132ec466f7362a95f36a506ce4dc08c9 https://git.kernel.org/stable/c/1f323a48e9b5ebfe6dc7d130fdf5c3c0e92a07c8 https://git.kernel.org/stable/c/7c4491b5644e3a3708f3dbd7591be0a570135b84 https://git.kernel.org/stable/c/9aee87da5572b3a14075f501752e209801160d3d https://git.kernel.org/stable/c/45bcf60fe49b37daab1acee57b27211ad1574042 https://git.kernel.org/stable/c/1b34cbbf4f011a121ef7b2d7d6e6920a036d5285
Powered by blists - more mailing lists