| 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-2024-41075: cachefiles: add consistency check for copen/cread |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| cachefiles: add consistency check for copen/cread |
| |
| This prevents malicious processes from completing random copen/cread |
| requests and crashing the system. Added checks are listed below: |
| |
| * Generic, copen can only complete open requests, and cread can only |
| complete read requests. |
| * For copen, ondemand_id must not be 0, because this indicates that the |
| request has not been read by the daemon. |
| * For cread, the object corresponding to fd and req should be the same. |
| |
| The Linux kernel CVE team has assigned CVE-2024-41075 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.19 with commit 9032b6e8589f269743984aac53e82e4835be16dc and fixed in 6.1.101 with commit 3b744884c0431b5a62c92900e64bfd0ed61e8e2a |
| Issue introduced in 5.19 with commit 9032b6e8589f269743984aac53e82e4835be16dc and fixed in 6.6.42 with commit 36d845ccd7bf527110a65fe953886a176c209539 |
| Issue introduced in 5.19 with commit 9032b6e8589f269743984aac53e82e4835be16dc and fixed in 6.9.11 with commit 8aaa6c5dd2940ab934d6cd296175f43dbb32b34a |
| Issue introduced in 5.19 with commit 9032b6e8589f269743984aac53e82e4835be16dc and fixed in 6.10 with commit a26dc49df37e996876f50a0210039b2d211fdd6f |
| |
| 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-2024-41075 |
| 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/cachefiles/ondemand.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/3b744884c0431b5a62c92900e64bfd0ed61e8e2a |
| https://git.kernel.org/stable/c/36d845ccd7bf527110a65fe953886a176c209539 |
| https://git.kernel.org/stable/c/8aaa6c5dd2940ab934d6cd296175f43dbb32b34a |
| https://git.kernel.org/stable/c/a26dc49df37e996876f50a0210039b2d211fdd6f |
