| 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-2022-48712: ext4: fix error handling in ext4_fc_record_modified_inode() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ext4: fix error handling in ext4_fc_record_modified_inode() |
| |
| Current code does not fully takes care of krealloc() error case, which |
| could lead to silent memory corruption or a kernel bug. This patch |
| fixes that. |
| |
| Also it cleans up some duplicated error handling logic from various |
| functions in fast_commit.c file. |
| |
| The Linux kernel CVE team has assigned CVE-2022-48712 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 5.10.99 with commit 62e46e0ffc02daa8fcfc02f7a932cc8a19601b19 |
| Fixed in 5.15.22 with commit 1b6762ecdf3cf12113772427c904aa3c420a1802 |
| Fixed in 5.16.8 with commit 14aa3f49c7fc6424763f4323bfbc3a807b0727dc |
| Fixed in 5.17 with commit cdce59a1549190b66f8e3fe465c2b2f714b98a94 |
| |
| 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-2022-48712 |
| 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/ext4/fast_commit.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/62e46e0ffc02daa8fcfc02f7a932cc8a19601b19 |
| https://git.kernel.org/stable/c/1b6762ecdf3cf12113772427c904aa3c420a1802 |
| https://git.kernel.org/stable/c/14aa3f49c7fc6424763f4323bfbc3a807b0727dc |
| https://git.kernel.org/stable/c/cdce59a1549190b66f8e3fe465c2b2f714b98a94 |
