| 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-2025-21773: can: etas_es58x: fix potential NULL pointer dereference on udev->serial |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| can: etas_es58x: fix potential NULL pointer dereference on udev->serial |
| |
| The driver assumed that es58x_dev->udev->serial could never be NULL. |
| While this is true on commercially available devices, an attacker |
| could spoof the device identity providing a NULL USB serial number. |
| That would trigger a NULL pointer dereference. |
| |
| Add a check on es58x_dev->udev->serial before accessing it. |
| |
| The Linux kernel CVE team has assigned CVE-2025-21773 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.2 with commit 9f06631c3f1f0f298536443df85a6837ba4c5f5c and fixed in 6.6.79 with commit 1590667a60753ee5a54871f2840ceefd4a7831fa |
| Issue introduced in 6.2 with commit 9f06631c3f1f0f298536443df85a6837ba4c5f5c and fixed in 6.12.16 with commit 722e8e1219c8b6ac2865011fe339315d6a8d0721 |
| Issue introduced in 6.2 with commit 9f06631c3f1f0f298536443df85a6837ba4c5f5c and fixed in 6.13.4 with commit 5059ea98d7bc133903d3e47ab36df6ed11d0c95f |
| Issue introduced in 6.2 with commit 9f06631c3f1f0f298536443df85a6837ba4c5f5c and fixed in 6.14 with commit a1ad2109ce41c9e3912dadd07ad8a9c640064ffb |
| |
| 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-2025-21773 |
| 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/can/usb/etas_es58x/es58x_devlink.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/1590667a60753ee5a54871f2840ceefd4a7831fa |
| https://git.kernel.org/stable/c/722e8e1219c8b6ac2865011fe339315d6a8d0721 |
| https://git.kernel.org/stable/c/5059ea98d7bc133903d3e47ab36df6ed11d0c95f |
| https://git.kernel.org/stable/c/a1ad2109ce41c9e3912dadd07ad8a9c640064ffb |
