| 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-2024-57991: wifi: rtw89: chan: fix soft lockup in rtw89_entity_recalc_mgnt_roles() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| wifi: rtw89: chan: fix soft lockup in rtw89_entity_recalc_mgnt_roles() |
| |
| During rtw89_entity_recalc_mgnt_roles(), there is a normalizing process |
| which will re-order the list if an entry with target pattern is found. |
| And once one is found, should have aborted the list_for_each_entry. But, |
| `break` just aborted the inner for-loop. The outer list_for_each_entry |
| still continues. Normally, only the first entry will match the target |
| pattern, and the re-ordering will change nothing, so there won't be |
| soft lockup. However, in some special cases, soft lockup would happen. |
| |
| Fix it by `goto fill` to break from the list_for_each_entry. |
| |
| The following is a sample of kernel log for this problem. |
| |
| watchdog: BUG: soft lockup - CPU#1 stuck for 26s! [wpa_supplicant:2055] |
| [...] |
| RIP: 0010:rtw89_entity_recalc ([...] chan.c:392 chan.c:479) rtw89_core |
| [...] |
| |
| The Linux kernel CVE team has assigned CVE-2024-57991 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.13 with commit 68ec751b288178de7d19b71ea61648269a35b8cd and fixed in 6.13.2 with commit 01d2d34e9fcc9897081c3c16a666f793c8a38c58 |
| Issue introduced in 6.13 with commit 68ec751b288178de7d19b71ea61648269a35b8cd and fixed in 6.14 with commit e4790b3e314a4814f1680a5dc552031fb199b878 |
| |
| 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-2024-57991 |
| 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: |
| drivers/net/wireless/realtek/rtw89/chan.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/223ba95fdcd3c6090e2bd51dce66abb6dd4f9df9 |
| https://git.kernel.org/stable/c/01d2d34e9fcc9897081c3c16a666f793c8a38c58 |
| https://git.kernel.org/stable/c/e4790b3e314a4814f1680a5dc552031fb199b878 |
