| 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-2022-49705: 9p: fix fid refcount leak in v9fs_vfs_atomic_open_dotl |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| 9p: fix fid refcount leak in v9fs_vfs_atomic_open_dotl |
| |
| We need to release directory fid if we fail halfway through open |
| |
| This fixes fid leaking with xfstests generic 531 |
| |
| The Linux kernel CVE team has assigned CVE-2022-49705 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.11 with commit 6636b6dcc3db2258cd0585b8078c1c225c4b6dde and fixed in 5.15.51 with commit 22832ac3eb5be3f7168816a76b64c1284e12eb3c |
| Issue introduced in 5.11 with commit 6636b6dcc3db2258cd0585b8078c1c225c4b6dde and fixed in 5.18.8 with commit 8bc5412ba1a45edfd1e451874c483c26a097af2b |
| Issue introduced in 5.11 with commit 6636b6dcc3db2258cd0585b8078c1c225c4b6dde and fixed in 5.19 with commit beca774fc51a9ba8abbc869cf0c3d965ff17cd24 |
| |
| 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-2022-49705 |
| 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/9p/vfs_inode_dotl.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/22832ac3eb5be3f7168816a76b64c1284e12eb3c |
| https://git.kernel.org/stable/c/8bc5412ba1a45edfd1e451874c483c26a097af2b |
| https://git.kernel.org/stable/c/beca774fc51a9ba8abbc869cf0c3d965ff17cd24 |
