| From bippy-1.1.0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@kernel.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2023-53113: wifi: nl80211: fix NULL-ptr deref in offchan check |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| wifi: nl80211: fix NULL-ptr deref in offchan check |
| |
| If, e.g. in AP mode, the link was already created by userspace |
| but not activated yet, it has a chandef but the chandef isn't |
| valid and has no channel. Check for this and ignore this link. |
| |
| The Linux kernel CVE team has assigned CVE-2023-53113 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.0 with commit 7b0a0e3c3a88260b6fcb017e49f198463aa62ed1 and fixed in 6.1.21 with commit 87e80ea4fbc9ce2f2005905fdbcd38baaa47463a |
| Issue introduced in 6.0 with commit 7b0a0e3c3a88260b6fcb017e49f198463aa62ed1 and fixed in 6.2.8 with commit 201a836c2385fdd2b9d0a8e7737bba5b26f1863a |
| Issue introduced in 6.0 with commit 7b0a0e3c3a88260b6fcb017e49f198463aa62ed1 and fixed in 6.3 with commit f624bb6fad23df3270580b4fcef415c6e7bf7705 |
| Issue introduced in 5.19.2 with commit 7a53ad13c09150076b7ddde96c2dfc5622c90b45 |
| |
| 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-2023-53113 |
| 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: |
| net/wireless/nl80211.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/87e80ea4fbc9ce2f2005905fdbcd38baaa47463a |
| https://git.kernel.org/stable/c/201a836c2385fdd2b9d0a8e7737bba5b26f1863a |
| https://git.kernel.org/stable/c/f624bb6fad23df3270580b4fcef415c6e7bf7705 |
