| From bippy-1.2.0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@kernel.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2025-37764: drm/imagination: fix firmware memory leaks |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm/imagination: fix firmware memory leaks |
| |
| Free the memory used to hold the results of firmware image processing |
| when the module is unloaded. |
| |
| Fix the related issue of the same memory being leaked if processing |
| of the firmware image fails during module load. |
| |
| Ensure all firmware GEM objects are destroyed if firmware image |
| processing fails. |
| |
| Fixes memory leaks on powervr module unload detected by Kmemleak: |
| |
| unreferenced object 0xffff000042e20000 (size 94208): |
| comm "modprobe", pid 470, jiffies 4295277154 |
| hex dump (first 32 bytes): |
| 02 ae 7f ed bf 45 84 00 3c 5b 1f ed 9f 45 45 05 .....E..<[...EE. |
| d5 4f 5d 14 6c 00 3d 23 30 d0 3a 4a 66 0e 48 c8 .O].l.=#0.:Jf.H. |
| backtrace (crc dd329dec): |
| kmemleak_alloc+0x30/0x40 |
| ___kmalloc_large_node+0x140/0x188 |
| __kmalloc_large_node_noprof+0x2c/0x13c |
| __kmalloc_noprof+0x48/0x4c0 |
| pvr_fw_init+0xaa4/0x1f50 [powervr] |
| |
| unreferenced object 0xffff000042d20000 (size 20480): |
| comm "modprobe", pid 470, jiffies 4295277154 |
| hex dump (first 32 bytes): |
| 00 00 00 00 00 00 00 00 09 00 00 00 0b 00 00 00 ................ |
| 00 00 00 00 00 00 00 00 07 00 00 00 08 00 00 00 ................ |
| backtrace (crc 395b02e3): |
| kmemleak_alloc+0x30/0x40 |
| ___kmalloc_large_node+0x140/0x188 |
| __kmalloc_large_node_noprof+0x2c/0x13c |
| __kmalloc_noprof+0x48/0x4c0 |
| pvr_fw_init+0xb0c/0x1f50 [powervr] |
| |
| The Linux kernel CVE team has assigned CVE-2025-37764 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.8 with commit cc1aeedb98ad347c06ff59e991b2f94dfb4c565d and fixed in 6.12.25 with commit 490c30fd554597e78f66650044877e7defb5f83c |
| Issue introduced in 6.8 with commit cc1aeedb98ad347c06ff59e991b2f94dfb4c565d and fixed in 6.14.4 with commit 891c12ba855ccb34c06a2e5da75c644683087036 |
| Issue introduced in 6.8 with commit cc1aeedb98ad347c06ff59e991b2f94dfb4c565d and fixed in 6.15 with commit a5b230e7f3a55bd8bd8d012eec75a4b7baa671d5 |
| |
| 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-2025-37764 |
| 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/imagination/pvr_fw.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/490c30fd554597e78f66650044877e7defb5f83c |
| https://git.kernel.org/stable/c/891c12ba855ccb34c06a2e5da75c644683087036 |
| https://git.kernel.org/stable/c/a5b230e7f3a55bd8bd8d012eec75a4b7baa671d5 |
