| 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-2024-56570: ovl: Filter invalid inodes with missing lookup function |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ovl: Filter invalid inodes with missing lookup function |
| |
| Add a check to the ovl_dentry_weird() function to prevent the |
| processing of directory inodes that lack the lookup function. |
| This is important because such inodes can cause errors in overlayfs |
| when passed to the lowerstack. |
| |
| The Linux kernel CVE team has assigned CVE-2024-56570 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 5.4.287 with commit f9248e2f73fb4afe08324485e98c815ac084d166 |
| Fixed in 5.10.231 with commit 5f86e79c0b2287ffdabe6c1b305a36c4e0f40fe3 |
| Fixed in 5.15.174 with commit 749eac5a6687ec99116e0691d0d71225254654e3 |
| Fixed in 6.1.120 with commit ff43d008bbf9b27ada434d6455f039a5ef6cee53 |
| Fixed in 6.6.64 with commit 065bf5dd21639f80e68450de16bda829784dbb8c |
| Fixed in 6.12.4 with commit 72014e7745cc8250bb8f27bd78694dfd3f1b5773 |
| Fixed in 6.13 with commit c8b359dddb418c60df1a69beea01d1b3322bfe83 |
| |
| 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-2024-56570 |
| 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/overlayfs/util.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/f9248e2f73fb4afe08324485e98c815ac084d166 |
| https://git.kernel.org/stable/c/5f86e79c0b2287ffdabe6c1b305a36c4e0f40fe3 |
| https://git.kernel.org/stable/c/749eac5a6687ec99116e0691d0d71225254654e3 |
| https://git.kernel.org/stable/c/ff43d008bbf9b27ada434d6455f039a5ef6cee53 |
| https://git.kernel.org/stable/c/065bf5dd21639f80e68450de16bda829784dbb8c |
| https://git.kernel.org/stable/c/72014e7745cc8250bb8f27bd78694dfd3f1b5773 |
| https://git.kernel.org/stable/c/c8b359dddb418c60df1a69beea01d1b3322bfe83 |
