| 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-2022-49012: afs: Fix server->active leak in afs_put_server |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| afs: Fix server->active leak in afs_put_server |
| |
| The atomic_read was accidentally replaced with atomic_inc_return, |
| which prevents the server from getting cleaned up and causes rmmod |
| to hang with a warning: |
| |
| Can't purge s=00000001 |
| |
| The Linux kernel CVE team has assigned CVE-2022-49012 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.0 with commit 2757a4dc184997c66ef1de32636f73b9f21aac14 and fixed in 6.0.12 with commit c5078548c29c735f71b05053659c0cb294e738ad |
| Issue introduced in 6.0 with commit 2757a4dc184997c66ef1de32636f73b9f21aac14 and fixed in 6.1 with commit ef4d3ea40565a781c25847e9cb96c1bd9f462bc6 |
| |
| 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-2022-49012 |
| 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/afs/server.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/c5078548c29c735f71b05053659c0cb294e738ad |
| https://git.kernel.org/stable/c/ef4d3ea40565a781c25847e9cb96c1bd9f462bc6 |
