| 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-2024-35916: dma-buf: Fix NULL pointer dereference in sanitycheck() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| dma-buf: Fix NULL pointer dereference in sanitycheck() |
| |
| If due to a memory allocation failure mock_chain() returns NULL, it is |
| passed to dma_fence_enable_sw_signaling() resulting in NULL pointer |
| dereference there. |
| |
| Call dma_fence_enable_sw_signaling() only if mock_chain() succeeds. |
| |
| Found by Linux Verification Center (linuxtesting.org) with SVACE. |
| |
| The Linux kernel CVE team has assigned CVE-2024-35916 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.1 with commit d62c43a953ce02d54521ec06217d0c2ed6d489af and fixed in 6.1.85 with commit 0336995512cdab0c65e99e4cdd47c4606debe14e |
| Issue introduced in 6.1 with commit d62c43a953ce02d54521ec06217d0c2ed6d489af and fixed in 6.6.26 with commit 156c226cbbdcf5f3bce7b2408a33b59fab7fae2c |
| Issue introduced in 6.1 with commit d62c43a953ce02d54521ec06217d0c2ed6d489af and fixed in 6.8.5 with commit eabf131cba1db12005a68378305f13b9090a7a6b |
| Issue introduced in 6.1 with commit d62c43a953ce02d54521ec06217d0c2ed6d489af and fixed in 6.9 with commit 2295bd846765c766701e666ed2e4b35396be25e6 |
| |
| 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-2024-35916 |
| 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/dma-buf/st-dma-fence-chain.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/0336995512cdab0c65e99e4cdd47c4606debe14e |
| https://git.kernel.org/stable/c/156c226cbbdcf5f3bce7b2408a33b59fab7fae2c |
| https://git.kernel.org/stable/c/eabf131cba1db12005a68378305f13b9090a7a6b |
| https://git.kernel.org/stable/c/2295bd846765c766701e666ed2e4b35396be25e6 |
