2.6 KiB
CVE-2024-56577
Description
In the Linux kernel, the following vulnerability has been resolved:media: mtk-jpeg: Fix null-ptr-deref during unload moduleThe workqueue should be destroyed in mtk_jpeg_core.c since commit09aea13ecf6f ("media: mtk-jpeg: refactor some variables"), otherwisethe below calltrace can be easily triggered.[ 677.862514] Unable to handle kernel paging request at virtual address dfff800000000023[ 677.863633] KASAN: null-ptr-deref in range [0x0000000000000118-0x000000000000011f]...[ 677.879654] CPU: 6 PID: 1071 Comm: modprobe Tainted: G O 6.8.12-mtk+gfa1a78e5d24b+ #17...[ 677.882838] pc : destroy_workqueue+0x3c/0x770[ 677.883413] lr : mtk_jpegdec_destroy_workqueue+0x70/0x88 [mtk_jpeg_dec_hw][ 677.884314] sp : ffff80008ad974f0[ 677.884744] x29: ffff80008ad974f0 x28: ffff0000d7115580 x27: ffff0000dd691070[ 677.885669] x26: ffff0000dd691408 x25: ffff8000844af3e0 x24: ffff80008ad97690[ 677.886592] x23: ffff0000e051d400 x22: ffff0000dd691010 x21: dfff800000000000[ 677.887515] x20: 0000000000000000 x19: 0000000000000000 x18: ffff800085397ac0[ 677.888438] x17: 0000000000000000 x16: ffff8000801b87c8 x15: 1ffff000115b2e10[ 677.889361] x14: 00000000f1f1f1f1 x13: 0000000000000000 x12: ffff7000115b2e4d[ 677.890285] x11: 1ffff000115b2e4c x10: ffff7000115b2e4c x9 : ffff80000aa43e90[ 677.891208] x8 : 00008fffeea4d1b4 x7 : ffff80008ad97267 x6 : 0000000000000001[ 677.892131] x5 : ffff80008ad97260 x4 : ffff7000115b2e4d x3 : 0000000000000000[ 677.893054] x2 : 0000000000000023 x1 : dfff800000000000 x0 : 0000000000000118[ 677.893977] Call trace:[ 677.894297] destroy_workqueue+0x3c/0x770[ 677.894826] mtk_jpegdec_destroy_workqueue+0x70/0x88 [mtk_jpeg_dec_hw][ 677.895677] devm_action_release+0x50/0x90[ 677.896211] release_nodes+0xe8/0x170[ 677.896688] devres_release_all+0xf8/0x178[ 677.897219] device_unbind_cleanup+0x24/0x170[ 677.897785] device_release_driver_internal+0x35c/0x480[ 677.898461] device_release_driver+0x20/0x38...[ 677.912665] ---[ end trace 0000000000000000 ]---
POC
Reference
No PoCs from references.