| 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-2024-41020: filelock: Fix fcntl/close race recovery compat path |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| filelock: Fix fcntl/close race recovery compat path |
| |
| When I wrote commit 3cad1bc01041 ("filelock: Remove locks reliably when |
| fcntl/close race is detected"), I missed that there are two copies of the |
| code I was patching: The normal version, and the version for 64-bit offsets |
| on 32-bit kernels. |
| Thanks to Greg KH for stumbling over this while doing the stable |
| backport... |
| |
| Apply exactly the same fix to the compat path for 32-bit kernels. |
| |
| The Linux kernel CVE team has assigned CVE-2024-41020 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 2.6.13 with commit c293621bbf678a3d85e3ed721c3921c8a670610d and fixed in 4.19.319 with commit a561145f3ae973ebf3e0aee41624e92a6c5cb38d |
| Issue introduced in 2.6.13 with commit c293621bbf678a3d85e3ed721c3921c8a670610d and fixed in 5.4.281 with commit 4c43ad4ab41602201d34c66ac62130fe339d686f |
| Issue introduced in 2.6.13 with commit c293621bbf678a3d85e3ed721c3921c8a670610d and fixed in 5.10.223 with commit 911cc83e56a2de5a40758766c6a70d6998248860 |
| Issue introduced in 2.6.13 with commit c293621bbf678a3d85e3ed721c3921c8a670610d and fixed in 5.15.164 with commit 53e21cfa68a7d12de378b7116c75571f73e0dfa2 |
| Issue introduced in 2.6.13 with commit c293621bbf678a3d85e3ed721c3921c8a670610d and fixed in 6.1.102 with commit f4d0775c6e2f1340ca0725f0337de149aaa989ca |
| Issue introduced in 2.6.13 with commit c293621bbf678a3d85e3ed721c3921c8a670610d and fixed in 6.6.43 with commit 73ae349534ebc377328e7d21891e589626c6e82c |
| Issue introduced in 2.6.13 with commit c293621bbf678a3d85e3ed721c3921c8a670610d and fixed in 6.9.12 with commit 5b0af8e4c70e4b884bb94ff5f0cd49ecf1273c02 |
| Issue introduced in 2.6.13 with commit c293621bbf678a3d85e3ed721c3921c8a670610d and fixed in 6.10.2 with commit ed898f9ca3fa32c56c858b463ceb9d9936cc69c4 |
| Issue introduced in 2.6.13 with commit c293621bbf678a3d85e3ed721c3921c8a670610d and fixed in 6.11 with commit f8138f2ad2f745b9a1c696a05b749eabe44337ea |
| |
| 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-2024-41020 |
| 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: |
| fs/locks.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/a561145f3ae973ebf3e0aee41624e92a6c5cb38d |
| https://git.kernel.org/stable/c/4c43ad4ab41602201d34c66ac62130fe339d686f |
| https://git.kernel.org/stable/c/911cc83e56a2de5a40758766c6a70d6998248860 |
| https://git.kernel.org/stable/c/53e21cfa68a7d12de378b7116c75571f73e0dfa2 |
| https://git.kernel.org/stable/c/f4d0775c6e2f1340ca0725f0337de149aaa989ca |
| https://git.kernel.org/stable/c/73ae349534ebc377328e7d21891e589626c6e82c |
| https://git.kernel.org/stable/c/5b0af8e4c70e4b884bb94ff5f0cd49ecf1273c02 |
| https://git.kernel.org/stable/c/ed898f9ca3fa32c56c858b463ceb9d9936cc69c4 |
| https://git.kernel.org/stable/c/f8138f2ad2f745b9a1c696a05b749eabe44337ea |
