CVE - CVE-2024-26875

CVE-ID
CVE-2024-26875	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: media: pvrusb2: fix uaf in pvr2_context_set_notify [Syzbot reported] BUG: KASAN: slab-use-after-free in pvr2_context_set_notify+0x2c4/0x310 drivers/media/usb/pvrusb2/pvrusb2-context.c:35 Read of size 4 at addr ffff888113aeb0d8 by task kworker/1:1/26 CPU: 1 PID: 26 Comm: kworker/1:1 Not tainted 6.8.0-rc1-syzkaller-00046-gf1a27f081c1f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 Workqueue: usb_hub_wq hub_event Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:377 [inline] print_report+0xc4/0x620 mm/kasan/report.c:488 kasan_report+0xda/0x110 mm/kasan/report.c:601 pvr2_context_set_notify+0x2c4/0x310 drivers/media/usb/pvrusb2/pvrusb2-context.c:35 pvr2_context_notify drivers/media/usb/pvrusb2/pvrusb2-context.c:95 [inline] pvr2_context_disconnect+0x94/0xb0 drivers/media/usb/pvrusb2/pvrusb2-context.c:272 Freed by task 906: kasan_save_stack+0x33/0x50 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 kasan_save_free_info+0x3f/0x60 mm/kasan/generic.c:640 poison_slab_object mm/kasan/common.c:241 [inline] __kasan_slab_free+0x106/0x1b0 mm/kasan/common.c:257 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2121 [inline] slab_free mm/slub.c:4299 [inline] kfree+0x105/0x340 mm/slub.c:4409 pvr2_context_check drivers/media/usb/pvrusb2/pvrusb2-context.c:137 [inline] pvr2_context_thread_func+0x69d/0x960 drivers/media/usb/pvrusb2/pvrusb2-context.c:158 [Analyze] Task A set disconnect_flag = !0, which resulted in Task B's condition being met and releasing mp, leading to this issue. [Fix] Place the disconnect_flag assignment operation after all code in pvr2_context_disconnect() to avoid this issue.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/0a0b79ea55de8514e1750884e5fec77f9fdd01ee URL:https://git.kernel.org/stable/c/0a0b79ea55de8514e1750884e5fec77f9fdd01ee MISC:https://git.kernel.org/stable/c/3a1ec89708d2e57e2712f46241282961b1a7a475 URL:https://git.kernel.org/stable/c/3a1ec89708d2e57e2712f46241282961b1a7a475 MISC:https://git.kernel.org/stable/c/40cd818fae875c424a8335009db33c7b5a07de3a URL:https://git.kernel.org/stable/c/40cd818fae875c424a8335009db33c7b5a07de3a MISC:https://git.kernel.org/stable/c/8e60b99f6b7ccb3badeb512f5eb613ad45904592 URL:https://git.kernel.org/stable/c/8e60b99f6b7ccb3badeb512f5eb613ad45904592 MISC:https://git.kernel.org/stable/c/ab896d93fd6a2cd1afeb034c3cc9226cb499209f URL:https://git.kernel.org/stable/c/ab896d93fd6a2cd1afeb034c3cc9226cb499209f MISC:https://git.kernel.org/stable/c/d29ed08964cec8b9729bc55c7bb23f679d7a18fb URL:https://git.kernel.org/stable/c/d29ed08964cec8b9729bc55c7bb23f679d7a18fb MISC:https://git.kernel.org/stable/c/eaa410e05bdf562c90b23cdf2d9327f9c4625e16 URL:https://git.kernel.org/stable/c/eaa410e05bdf562c90b23cdf2d9327f9c4625e16 MISC:https://git.kernel.org/stable/c/eb6e9dce979c08210ff7249e5e0eceb8991bfcd7 URL:https://git.kernel.org/stable/c/eb6e9dce979c08210ff7249e5e0eceb8991bfcd7 MISC:https://git.kernel.org/stable/c/ed8000e1e8e9684ab6c30cf2b526c0cea039929c URL:https://git.kernel.org/stable/c/ed8000e1e8e9684ab6c30cf2b526c0cea039929c
Assigning CNA
kernel.org
Date Record Created
20240219	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240219)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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