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.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 20.04 | noarch | linux | < 5.4.0-189.209 | UNKNOWN |
ubuntu | 22.04 | noarch | linux | < 5.15.0-112.122 | UNKNOWN |
ubuntu | 24.04 | noarch | linux | < 6.8.0-35.35 | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws | < 5.4.0-1128.138 | UNKNOWN |
ubuntu | 22.04 | noarch | linux-aws | < 5.15.0-1063.69 | UNKNOWN |
ubuntu | 24.04 | noarch | linux-aws | < 6.8.0-1009.9 | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws-5.15 | < 5.15.0-1063.69~20.04.1 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws-5.4 | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-aws-6.5 | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-azure | < 5.4.0-1133.140 | UNKNOWN |
git.kernel.org/linus/0a0b79ea55de8514e1750884e5fec77f9fdd01ee (6.9-rc1)
git.kernel.org/stable/c/0a0b79ea55de8514e1750884e5fec77f9fdd01ee
git.kernel.org/stable/c/3a1ec89708d2e57e2712f46241282961b1a7a475
git.kernel.org/stable/c/40cd818fae875c424a8335009db33c7b5a07de3a
git.kernel.org/stable/c/8e60b99f6b7ccb3badeb512f5eb613ad45904592
git.kernel.org/stable/c/ab896d93fd6a2cd1afeb034c3cc9226cb499209f
git.kernel.org/stable/c/d29ed08964cec8b9729bc55c7bb23f679d7a18fb
git.kernel.org/stable/c/eaa410e05bdf562c90b23cdf2d9327f9c4625e16
git.kernel.org/stable/c/eb6e9dce979c08210ff7249e5e0eceb8991bfcd7
git.kernel.org/stable/c/ed8000e1e8e9684ab6c30cf2b526c0cea039929c
launchpad.net/bugs/cve/CVE-2024-26875
nvd.nist.gov/vuln/detail/CVE-2024-26875
security-tracker.debian.org/tracker/CVE-2024-26875
ubuntu.com/security/notices/USN-6816-1
ubuntu.com/security/notices/USN-6817-1
ubuntu.com/security/notices/USN-6817-2
ubuntu.com/security/notices/USN-6817-3
ubuntu.com/security/notices/USN-6820-1
ubuntu.com/security/notices/USN-6820-2
ubuntu.com/security/notices/USN-6821-1
ubuntu.com/security/notices/USN-6821-2
ubuntu.com/security/notices/USN-6821-3
ubuntu.com/security/notices/USN-6821-4
ubuntu.com/security/notices/USN-6828-1
ubuntu.com/security/notices/USN-6871-1
ubuntu.com/security/notices/USN-6878-1
ubuntu.com/security/notices/USN-6892-1
ubuntu.com/security/notices/USN-6896-1
ubuntu.com/security/notices/USN-6896-2
ubuntu.com/security/notices/USN-6896-3
ubuntu.com/security/notices/USN-6896-4
ubuntu.com/security/notices/USN-6896-5
ubuntu.com/security/notices/USN-6919-1
www.cve.org/CVERecord?id=CVE-2024-26875