| 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-2024-47712: wifi: wilc1000: fix potential RCU dereference issue in wilc_parse_join_bss_param |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| wifi: wilc1000: fix potential RCU dereference issue in wilc_parse_join_bss_param |
| |
| In the `wilc_parse_join_bss_param` function, the TSF field of the `ies` |
| structure is accessed after the RCU read-side critical section is |
| unlocked. According to RCU usage rules, this is illegal. Reusing this |
| pointer can lead to unpredictable behavior, including accessing memory |
| that has been updated or causing use-after-free issues. |
| |
| This possible bug was identified using a static analysis tool developed |
| by myself, specifically designed to detect RCU-related issues. |
| |
| To address this, the TSF value is now stored in a local variable |
| `ies_tsf` before the RCU lock is released. The `param->tsf_lo` field is |
| then assigned using this local variable, ensuring that the TSF value is |
| safely accessed. |
| |
| The Linux kernel CVE team has assigned CVE-2024-47712 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.4.273 with commit e556006de4ea93abe2b46cba202a2556c544b8b2 and fixed in 5.4.285 with commit 5a24cedc243ace5ed7c1016f52a7bfc8f5b07815 |
| Issue introduced in 5.10.214 with commit b4bbf38c350acb6500cbe667b1e2e68f896e4b38 and fixed in 5.10.227 with commit 557418e1704605a81c9e26732449f71b1d40ba1e |
| Issue introduced in 5.15.153 with commit d80fc436751cfa6b02a8eda74eb6cce7dadfe5a2 and fixed in 5.15.168 with commit bf090f4fe935294361eabd9dc5a949fdd77d3d1b |
| Issue introduced in 6.1.83 with commit 745003b5917b610352f52fe0d11ef658d6471ec2 and fixed in 6.1.113 with commit b040b71d99ee5e17bb7a743dc01cbfcae8908ce1 |
| Issue introduced in 6.6.23 with commit 4bfd20d5f5c62b5495d6c0016ee6933bd3add7ce and fixed in 6.6.54 with commit 84398204c5df5aaf89453056cf0647cda9664d2b |
| Issue introduced in 6.9 with commit 205c50306acf58a335eb19fa84e40140f4fe814f and fixed in 6.10.13 with commit 2f944e6255c2fc1c9bd9ee32f6b14ee0b2a51eb5 |
| Issue introduced in 6.9 with commit 205c50306acf58a335eb19fa84e40140f4fe814f and fixed in 6.11.2 with commit 79510414a7626317f13cc9073244ab7a8deb3192 |
| Issue introduced in 6.9 with commit 205c50306acf58a335eb19fa84e40140f4fe814f and fixed in 6.12 with commit 6d7c6ae1efb1ff68bc01d79d94fdf0388f86cdd8 |
| Issue introduced in 6.7.11 with commit 5800ec78775c0cd646f71eb9bf8402fb794807de |
| Issue introduced in 6.8.2 with commit dd50d3ead6e3707bb0a5df7cc832730c93ace3a7 |
| |
| 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-2024-47712 |
| 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/microchip/wilc1000/hif.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/5a24cedc243ace5ed7c1016f52a7bfc8f5b07815 |
| https://git.kernel.org/stable/c/557418e1704605a81c9e26732449f71b1d40ba1e |
| https://git.kernel.org/stable/c/bf090f4fe935294361eabd9dc5a949fdd77d3d1b |
| https://git.kernel.org/stable/c/b040b71d99ee5e17bb7a743dc01cbfcae8908ce1 |
| https://git.kernel.org/stable/c/84398204c5df5aaf89453056cf0647cda9664d2b |
| https://git.kernel.org/stable/c/2f944e6255c2fc1c9bd9ee32f6b14ee0b2a51eb5 |
| https://git.kernel.org/stable/c/79510414a7626317f13cc9073244ab7a8deb3192 |
| https://git.kernel.org/stable/c/6d7c6ae1efb1ff68bc01d79d94fdf0388f86cdd8 |
