U.S. flag   An official website of the United States government
Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock (Dot gov) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

CVE-2024-26875 Detail

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.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to nvd@nist.gov.

Hyperlink Resource
https://git.kernel.org/stable/c/0a0b79ea55de8514e1750884e5fec77f9fdd01ee
https://git.kernel.org/stable/c/0a0b79ea55de8514e1750884e5fec77f9fdd01ee
https://git.kernel.org/stable/c/3a1ec89708d2e57e2712f46241282961b1a7a475
https://git.kernel.org/stable/c/3a1ec89708d2e57e2712f46241282961b1a7a475
https://git.kernel.org/stable/c/40cd818fae875c424a8335009db33c7b5a07de3a
https://git.kernel.org/stable/c/40cd818fae875c424a8335009db33c7b5a07de3a
https://git.kernel.org/stable/c/8e60b99f6b7ccb3badeb512f5eb613ad45904592
https://git.kernel.org/stable/c/8e60b99f6b7ccb3badeb512f5eb613ad45904592
https://git.kernel.org/stable/c/ab896d93fd6a2cd1afeb034c3cc9226cb499209f
https://git.kernel.org/stable/c/ab896d93fd6a2cd1afeb034c3cc9226cb499209f
https://git.kernel.org/stable/c/d29ed08964cec8b9729bc55c7bb23f679d7a18fb
https://git.kernel.org/stable/c/d29ed08964cec8b9729bc55c7bb23f679d7a18fb
https://git.kernel.org/stable/c/eaa410e05bdf562c90b23cdf2d9327f9c4625e16
https://git.kernel.org/stable/c/eaa410e05bdf562c90b23cdf2d9327f9c4625e16
https://git.kernel.org/stable/c/eb6e9dce979c08210ff7249e5e0eceb8991bfcd7
https://git.kernel.org/stable/c/eb6e9dce979c08210ff7249e5e0eceb8991bfcd7
https://git.kernel.org/stable/c/ed8000e1e8e9684ab6c30cf2b526c0cea039929c
https://git.kernel.org/stable/c/ed8000e1e8e9684ab6c30cf2b526c0cea039929c
https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html

Weakness Enumeration

CWE-ID CWE Name Source
CWE-416 Use After Free CISA-ADP  

Change History

8 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2024-26875
NVD Published Date:
04/17/2024
NVD Last Modified:
11/21/2024
Source:
kernel.org