| From bippy-1.2.0 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-2024-35924: usb: typec: ucsi: Limit read size on v1.2 |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| usb: typec: ucsi: Limit read size on v1.2 |
| |
| Between UCSI 1.2 and UCSI 2.0, the size of the MESSAGE_IN region was |
| increased from 16 to 256. In order to avoid overflowing reads for older |
| systems, add a mechanism to use the read UCSI version to truncate read |
| sizes on UCSI v1.2. |
| |
| The Linux kernel CVE team has assigned CVE-2024-35924 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.5 with commit bdc62f2bae8fb0e8e99574de5232f0a3c54a27df and fixed in 6.6.27 with commit 266f403ec47573046dee4bcebda82777ce702c40 |
| Issue introduced in 5.5 with commit bdc62f2bae8fb0e8e99574de5232f0a3c54a27df and fixed in 6.8.6 with commit 0defcaa09d3b21e8387829ee3a652c43fa91e13f |
| Issue introduced in 5.5 with commit bdc62f2bae8fb0e8e99574de5232f0a3c54a27df and fixed in 6.9 with commit b3db266fb031fba88c423d4bb8983a73a3db6527 |
| |
| 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-2024-35924 |
| 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/usb/typec/ucsi/ucsi.c |
| drivers/usb/typec/ucsi/ucsi.h |
| |
| |
| 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/266f403ec47573046dee4bcebda82777ce702c40 |
| https://git.kernel.org/stable/c/0defcaa09d3b21e8387829ee3a652c43fa91e13f |
| https://git.kernel.org/stable/c/b3db266fb031fba88c423d4bb8983a73a3db6527 |
