| 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-2024-56767: dmaengine: at_xdmac: avoid null_prt_deref in at_xdmac_prep_dma_memset |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| dmaengine: at_xdmac: avoid null_prt_deref in at_xdmac_prep_dma_memset |
| |
| The at_xdmac_memset_create_desc may return NULL, which will lead to a |
| null pointer dereference. For example, the len input is error, or the |
| atchan->free_descs_list is empty and memory is exhausted. Therefore, add |
| check to avoid this. |
| |
| The Linux kernel CVE team has assigned CVE-2024-56767 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.2 with commit b206d9a23ac71cb905f5fb6e0cd813406f89b678 and fixed in 5.4.289 with commit 3d229600c54e9e0909080ecaf1aab0642aefa5f0 |
| Issue introduced in 4.2 with commit b206d9a23ac71cb905f5fb6e0cd813406f89b678 and fixed in 5.10.233 with commit ed1a8aaa344522c0c349ac9042db27ad130ef913 |
| Issue introduced in 4.2 with commit b206d9a23ac71cb905f5fb6e0cd813406f89b678 and fixed in 5.15.176 with commit 8d364597de9ce2a5f52714224bfe6c2e7a29b303 |
| Issue introduced in 4.2 with commit b206d9a23ac71cb905f5fb6e0cd813406f89b678 and fixed in 6.1.123 with commit fdba6d5e455388377ec7e82a5913ddfcc7edd93b |
| Issue introduced in 4.2 with commit b206d9a23ac71cb905f5fb6e0cd813406f89b678 and fixed in 6.6.69 with commit e658f1c133b854b2ae799147301d82dddb8f3162 |
| Issue introduced in 4.2 with commit b206d9a23ac71cb905f5fb6e0cd813406f89b678 and fixed in 6.12.8 with commit 54376d8d26596f98ed7432a788314bb9154bf3e3 |
| Issue introduced in 4.2 with commit b206d9a23ac71cb905f5fb6e0cd813406f89b678 and fixed in 6.13 with commit c43ec96e8d34399bd9dab2f2dc316b904892133f |
| |
| 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-2024-56767 |
| 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/at_xdmac.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/3d229600c54e9e0909080ecaf1aab0642aefa5f0 |
| https://git.kernel.org/stable/c/ed1a8aaa344522c0c349ac9042db27ad130ef913 |
| https://git.kernel.org/stable/c/8d364597de9ce2a5f52714224bfe6c2e7a29b303 |
| https://git.kernel.org/stable/c/fdba6d5e455388377ec7e82a5913ddfcc7edd93b |
| https://git.kernel.org/stable/c/e658f1c133b854b2ae799147301d82dddb8f3162 |
| https://git.kernel.org/stable/c/54376d8d26596f98ed7432a788314bb9154bf3e3 |
| https://git.kernel.org/stable/c/c43ec96e8d34399bd9dab2f2dc316b904892133f |
