| 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-2024-43867: drm/nouveau: prime: fix refcount underflow |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm/nouveau: prime: fix refcount underflow |
| |
| Calling nouveau_bo_ref() on a nouveau_bo without initializing it (and |
| hence the backing ttm_bo) leads to a refcount underflow. |
| |
| Instead of calling nouveau_bo_ref() in the unwind path of |
| drm_gem_object_init(), clean things up manually. |
| |
| (cherry picked from commit 1b93f3e89d03cfc576636e195466a0d728ad8de5) |
| |
| The Linux kernel CVE team has assigned CVE-2024-43867 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 3.9 with commit ab9ccb96a6e6f95bcde6b8b2a524370efdbfdcd6 and fixed in 5.4.282 with commit 3bcb8bba72ce89667fa863054956267c450c47ef |
| Issue introduced in 3.9 with commit ab9ccb96a6e6f95bcde6b8b2a524370efdbfdcd6 and fixed in 5.10.224 with commit 906372e753c5027a1dc88743843b6aa2ad1aaecf |
| Issue introduced in 3.9 with commit ab9ccb96a6e6f95bcde6b8b2a524370efdbfdcd6 and fixed in 5.15.165 with commit 16998763c62bb465ebc409d0373b9cdcef1a61a6 |
| Issue introduced in 3.9 with commit ab9ccb96a6e6f95bcde6b8b2a524370efdbfdcd6 and fixed in 6.1.104 with commit ebebba4d357b6c67f96776a48ddbaf0060fa4c10 |
| Issue introduced in 3.9 with commit ab9ccb96a6e6f95bcde6b8b2a524370efdbfdcd6 and fixed in 6.6.45 with commit f23cd66933fe76b84d8e282e5606b4d99068c320 |
| Issue introduced in 3.9 with commit ab9ccb96a6e6f95bcde6b8b2a524370efdbfdcd6 and fixed in 6.10.4 with commit 2a1b327d57a8ac080977633a18999f032d7e9e3f |
| Issue introduced in 3.9 with commit ab9ccb96a6e6f95bcde6b8b2a524370efdbfdcd6 and fixed in 6.11 with commit a9bf3efc33f1fbf88787a277f7349459283c9b95 |
| |
| 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-2024-43867 |
| 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/nouveau/nouveau_prime.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/3bcb8bba72ce89667fa863054956267c450c47ef |
| https://git.kernel.org/stable/c/906372e753c5027a1dc88743843b6aa2ad1aaecf |
| https://git.kernel.org/stable/c/16998763c62bb465ebc409d0373b9cdcef1a61a6 |
| https://git.kernel.org/stable/c/ebebba4d357b6c67f96776a48ddbaf0060fa4c10 |
| https://git.kernel.org/stable/c/f23cd66933fe76b84d8e282e5606b4d99068c320 |
| https://git.kernel.org/stable/c/2a1b327d57a8ac080977633a18999f032d7e9e3f |
| https://git.kernel.org/stable/c/a9bf3efc33f1fbf88787a277f7349459283c9b95 |
