| 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-2022-49739: gfs2: Always check inode size of inline inodes |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| gfs2: Always check inode size of inline inodes |
| |
| Check if the inode size of stuffed (inline) inodes is within the allowed |
| range when reading inodes from disk (gfs2_dinode_in()). This prevents |
| us from on-disk corruption. |
| |
| The two checks in stuffed_readpage() and gfs2_unstuffer_page() that just |
| truncate inline data to the maximum allowed size don't actually make |
| sense, and they can be removed now as well. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49739 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 4.19.280 with commit 45df749f827c286adbc951f2a4865b67f0442ba9 |
| Fixed in 5.4.240 with commit 4d4cb76636134bf9a0c9c3432dae936f99954586 |
| Fixed in 5.10.177 with commit 7c414f6f06e9a3934901b6edc3177ae5a1e07094 |
| Fixed in 5.15.93 with commit 46c9088cabd4d0469fdb61ac2a9c5003057fe94d |
| Fixed in 6.1.11 with commit d458a0984429c2d47e60254f5bc4119cbafe83a2 |
| Fixed in 6.2 with commit 70376c7ff31221f1d21db5611d8209e677781d3a |
| |
| 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-2022-49739 |
| 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/gfs2/aops.c |
| fs/gfs2/bmap.c |
| fs/gfs2/glops.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/45df749f827c286adbc951f2a4865b67f0442ba9 |
| https://git.kernel.org/stable/c/4d4cb76636134bf9a0c9c3432dae936f99954586 |
| https://git.kernel.org/stable/c/7c414f6f06e9a3934901b6edc3177ae5a1e07094 |
| https://git.kernel.org/stable/c/46c9088cabd4d0469fdb61ac2a9c5003057fe94d |
| https://git.kernel.org/stable/c/d458a0984429c2d47e60254f5bc4119cbafe83a2 |
| https://git.kernel.org/stable/c/70376c7ff31221f1d21db5611d8209e677781d3a |
