| 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-2021-47611: mac80211: validate extended element ID is present |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| mac80211: validate extended element ID is present |
| |
| Before attempting to parse an extended element, verify that |
| the extended element ID is present. |
| |
| The Linux kernel CVE team has assigned CVE-2021-47611 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.19 with commit 41cbb0f5a29592874355e4159489eb08337cd50e and fixed in 4.19.222 with commit 03029bb044ccee60adbc93e70713f3ae58abc3a1 |
| Issue introduced in 4.19 with commit 41cbb0f5a29592874355e4159489eb08337cd50e and fixed in 5.4.168 with commit a19cf6844b509d44ecbd536f33d314d91ecdd2b5 |
| Issue introduced in 4.19 with commit 41cbb0f5a29592874355e4159489eb08337cd50e and fixed in 5.10.88 with commit 7fd214fc7f2ee3a89f91e717e3cfad55f5a27045 |
| Issue introduced in 4.19 with commit 41cbb0f5a29592874355e4159489eb08337cd50e and fixed in 5.15.11 with commit c62b16f98688ae7bc0ab23a6490481f4ce9b3a49 |
| Issue introduced in 4.19 with commit 41cbb0f5a29592874355e4159489eb08337cd50e and fixed in 5.16 with commit 768c0b19b50665e337c96858aa2b7928d6dcf756 |
| |
| 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-2021-47611 |
| 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/mac80211/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/03029bb044ccee60adbc93e70713f3ae58abc3a1 |
| https://git.kernel.org/stable/c/a19cf6844b509d44ecbd536f33d314d91ecdd2b5 |
| https://git.kernel.org/stable/c/7fd214fc7f2ee3a89f91e717e3cfad55f5a27045 |
| https://git.kernel.org/stable/c/c62b16f98688ae7bc0ab23a6490481f4ce9b3a49 |
| https://git.kernel.org/stable/c/768c0b19b50665e337c96858aa2b7928d6dcf756 |
