| 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-2024-44938: jfs: Fix shift-out-of-bounds in dbDiscardAG |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| jfs: Fix shift-out-of-bounds in dbDiscardAG |
| |
| When searching for the next smaller log2 block, BLKSTOL2() returned 0, |
| causing shift exponent -1 to be negative. |
| |
| This patch fixes the issue by exiting the loop directly when negative |
| shift is found. |
| |
| The Linux kernel CVE team has assigned CVE-2024-44938 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 3.7 with commit b40c2e665cd552eae5fbdbb878bc29a34357668e and fixed in 5.10.237 with commit bb7c605a754823b86dd74f6537ccb9d38a9dec5a |
| Issue introduced in 3.7 with commit b40c2e665cd552eae5fbdbb878bc29a34357668e and fixed in 5.15.181 with commit 4de2c04c3acd5b84f50b0d2f8f09e9b2f42374b9 |
| Issue introduced in 3.7 with commit b40c2e665cd552eae5fbdbb878bc29a34357668e and fixed in 6.1.107 with commit bd04a149e3a29e7f71b7956ed41dba34e42d539e |
| Issue introduced in 3.7 with commit b40c2e665cd552eae5fbdbb878bc29a34357668e and fixed in 6.6.47 with commit f650148b43949ca9e37e820804bb6026fff404f3 |
| Issue introduced in 3.7 with commit b40c2e665cd552eae5fbdbb878bc29a34357668e and fixed in 6.10.6 with commit 234e6ea0855cdb5673d54ecaf7dc5c78f3e84630 |
| Issue introduced in 3.7 with commit b40c2e665cd552eae5fbdbb878bc29a34357668e and fixed in 6.11 with commit 7063b80268e2593e58bee8a8d709c2f3ff93e2f2 |
| |
| 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-2024-44938 |
| 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/jfs/jfs_dmap.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/bb7c605a754823b86dd74f6537ccb9d38a9dec5a |
| https://git.kernel.org/stable/c/4de2c04c3acd5b84f50b0d2f8f09e9b2f42374b9 |
| https://git.kernel.org/stable/c/bd04a149e3a29e7f71b7956ed41dba34e42d539e |
| https://git.kernel.org/stable/c/f650148b43949ca9e37e820804bb6026fff404f3 |
| https://git.kernel.org/stable/c/234e6ea0855cdb5673d54ecaf7dc5c78f3e84630 |
| https://git.kernel.org/stable/c/7063b80268e2593e58bee8a8d709c2f3ff93e2f2 |
