| 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-2025-22076: exfat: fix missing shutdown check |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| exfat: fix missing shutdown check |
| |
| xfstests generic/730 test failed because after deleting the device |
| that still had dirty data, the file could still be read without |
| returning an error. The reason is the missing shutdown check in |
| ->read_iter. |
| |
| I also noticed that shutdown checks were missing from ->write_iter, |
| ->splice_read, and ->mmap. This commit adds shutdown checks to all |
| of them. |
| |
| The Linux kernel CVE team has assigned CVE-2025-22076 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.12 with commit f761fcdd289d07e8547fef7ac76c3760fc7803f2 and fixed in 6.12.23 with commit 4a9595eb024b8319957c178be3cdeed613ac0795 |
| Issue introduced in 6.12 with commit f761fcdd289d07e8547fef7ac76c3760fc7803f2 and fixed in 6.13.11 with commit e41e33eb795cb9c1ead6ac627d8710546fac6e81 |
| Issue introduced in 6.12 with commit f761fcdd289d07e8547fef7ac76c3760fc7803f2 and fixed in 6.14.2 with commit 539147585ca453db6e3d7a5cf3b9c9690513762d |
| Issue introduced in 6.12 with commit f761fcdd289d07e8547fef7ac76c3760fc7803f2 and fixed in 6.15 with commit 47e35366bc6fa3cf189a8305bce63992495f3efa |
| |
| 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-2025-22076 |
| 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/exfat/file.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/4a9595eb024b8319957c178be3cdeed613ac0795 |
| https://git.kernel.org/stable/c/e41e33eb795cb9c1ead6ac627d8710546fac6e81 |
| https://git.kernel.org/stable/c/539147585ca453db6e3d7a5cf3b9c9690513762d |
| https://git.kernel.org/stable/c/47e35366bc6fa3cf189a8305bce63992495f3efa |
