| 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-2024-26973: fat: fix uninitialized field in nostale filehandles |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| fat: fix uninitialized field in nostale filehandles |
| |
| When fat_encode_fh_nostale() encodes file handle without a parent it |
| stores only first 10 bytes of the file handle. However the length of the |
| file handle must be a multiple of 4 so the file handle is actually 12 |
| bytes long and the last two bytes remain uninitialized. This is not |
| great at we potentially leak uninitialized information with the handle |
| to userspace. Properly initialize the full handle length. |
| |
| The Linux kernel CVE team has assigned CVE-2024-26973 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 3.10 with commit ea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 and fixed in 4.19.312 with commit 9840d1897e28f8733cc1e38f97e044f987dc0a63 |
| Issue introduced in 3.10 with commit ea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 and fixed in 5.4.274 with commit f52d7663a10a1266a2d3871a6dd8fd111edc549f |
| Issue introduced in 3.10 with commit ea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 and fixed in 5.10.215 with commit a276c595c3a629170b0f052a3724f755d7c6adc6 |
| Issue introduced in 3.10 with commit ea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 and fixed in 5.15.154 with commit b7fb63e807c6dadf7ecc1d43448c4f1711d7eeee |
| Issue introduced in 3.10 with commit ea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 and fixed in 6.1.84 with commit c8cc05de8e6b5612b6e9f92c385c1a064b0db375 |
| Issue introduced in 3.10 with commit ea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 and fixed in 6.6.24 with commit 03a7e3f2ba3ca25f1da1d3898709a08db14c1abb |
| Issue introduced in 3.10 with commit ea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 and fixed in 6.7.12 with commit 74f852654b8b7866f15323685f1e178d3386c688 |
| Issue introduced in 3.10 with commit ea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 and fixed in 6.8.3 with commit cdd33d54e789d229d6d5007cbf3f53965ca1a5c6 |
| Issue introduced in 3.10 with commit ea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 and fixed in 6.9 with commit fde2497d2bc3a063d8af88b258dbadc86bd7b57c |
| |
| 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-2024-26973 |
| 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/fat/nfs.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/9840d1897e28f8733cc1e38f97e044f987dc0a63 |
| https://git.kernel.org/stable/c/f52d7663a10a1266a2d3871a6dd8fd111edc549f |
| https://git.kernel.org/stable/c/a276c595c3a629170b0f052a3724f755d7c6adc6 |
| https://git.kernel.org/stable/c/b7fb63e807c6dadf7ecc1d43448c4f1711d7eeee |
| https://git.kernel.org/stable/c/c8cc05de8e6b5612b6e9f92c385c1a064b0db375 |
| https://git.kernel.org/stable/c/03a7e3f2ba3ca25f1da1d3898709a08db14c1abb |
| https://git.kernel.org/stable/c/74f852654b8b7866f15323685f1e178d3386c688 |
| https://git.kernel.org/stable/c/cdd33d54e789d229d6d5007cbf3f53965ca1a5c6 |
| https://git.kernel.org/stable/c/fde2497d2bc3a063d8af88b258dbadc86bd7b57c |
