| 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-2024-38548: drm: bridge: cdns-mhdp8546: Fix possible null pointer dereference |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm: bridge: cdns-mhdp8546: Fix possible null pointer dereference |
| |
| In cdns_mhdp_atomic_enable(), the return value of drm_mode_duplicate() is |
| assigned to mhdp_state->current_mode, and there is a dereference of it in |
| drm_mode_set_name(), which will lead to a NULL pointer dereference on |
| failure of drm_mode_duplicate(). |
| |
| Fix this bug add a check of mhdp_state->current_mode. |
| |
| The Linux kernel CVE team has assigned CVE-2024-38548 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.10 with commit fb43aa0acdfd600c75b8c877bdf9f6e9893ffc9b and fixed in 5.10.219 with commit 85d1a27402f81f2e04b0e67d20f749c2a14edbb3 |
| Issue introduced in 5.10 with commit fb43aa0acdfd600c75b8c877bdf9f6e9893ffc9b and fixed in 5.15.161 with commit 89788cd9824c28ffcdea40232c458233353d1896 |
| Issue introduced in 5.10 with commit fb43aa0acdfd600c75b8c877bdf9f6e9893ffc9b and fixed in 6.1.93 with commit ca53b7efd4ba6ae92fd2b3085cb099c745e96965 |
| Issue introduced in 5.10 with commit fb43aa0acdfd600c75b8c877bdf9f6e9893ffc9b and fixed in 6.6.33 with commit dcf53e6103b26e7458be71491d0641f49fbd5840 |
| Issue introduced in 5.10 with commit fb43aa0acdfd600c75b8c877bdf9f6e9893ffc9b and fixed in 6.8.12 with commit 32fb2ef124c3301656ac6c789a2ef35ef69a66da |
| Issue introduced in 5.10 with commit fb43aa0acdfd600c75b8c877bdf9f6e9893ffc9b and fixed in 6.9.3 with commit 47889711da20be9b43e1e136e5cb68df37cbcc79 |
| Issue introduced in 5.10 with commit fb43aa0acdfd600c75b8c877bdf9f6e9893ffc9b and fixed in 6.10 with commit 935a92a1c400285545198ca2800a4c6c519c650a |
| |
| 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-2024-38548 |
| 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/gpu/drm/bridge/cadence/cdns-mhdp8546-core.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/85d1a27402f81f2e04b0e67d20f749c2a14edbb3 |
| https://git.kernel.org/stable/c/89788cd9824c28ffcdea40232c458233353d1896 |
| https://git.kernel.org/stable/c/ca53b7efd4ba6ae92fd2b3085cb099c745e96965 |
| https://git.kernel.org/stable/c/dcf53e6103b26e7458be71491d0641f49fbd5840 |
| https://git.kernel.org/stable/c/32fb2ef124c3301656ac6c789a2ef35ef69a66da |
| https://git.kernel.org/stable/c/47889711da20be9b43e1e136e5cb68df37cbcc79 |
| https://git.kernel.org/stable/c/935a92a1c400285545198ca2800a4c6c519c650a |
