CVE-2023-53765: In the Linux kernel, the following vulnerability has been resolved: dm cache: free background tracker's queued work in btracker_destroy Otherwise the kernel…

PriorityP420medium5.5

EPSS

0.18%

7.7th percentile

In the Linux kernel, the following vulnerability has been resolved: dm cache: free background tracker's queued work in btracker_destroy Otherwise the kernel can BUG with: [ 2245.426978] ============================================================================= [ 2245.435155] BUG bt_work (Tainted: G B W ): Objects remaining in bt_work on __kmem_cache_shutdown() [ 2245.445233] ----------------------------------------------------------------------------- [ 2245.445233] [ 2245.454879] Slab 0x00000000b0ce2b30 objects=64 used=2 fp=0x000000000a3c6a4e flags=0x17ffffc0000200(slab|node=0|zone=2|lastcpupid=0x1fffff) [ 2245.467300] CPU: 7 PID: 10805 Comm: lvm Kdump: loaded Tainted: G B W 6.0.0-rc2 #19 [ 2245.476078] Hardware name: Dell Inc. PowerEdge R7525/0590KW, BIOS 2.5.6 10/06/2021 [ 2245.483646] Call Trace: [ 2245.486100] [ 2245.488206] dump_stack_lvl+0x34/0x48 [ 2245.491878] slab_err+0x95/0xcd [ 2245.495028] __kmem_cache_shutdown.cold+0x31/0x136 [ 2245.499821] kmem_cache_destroy+0x49/0x130 [ 2245.503928] btracker_destroy+0x12/0x20 [dm_cache] [ 2245.508728] smq_destroy+0x15/0x60 [dm_cache_smq] [ 2245.513435] dm_cache_policy_destroy+0x12/0x20 [dm_cache] [ 2245.518834] destroy+0xc0/0x110 [dm_cache] [ 2245.522933] dm_table_destroy+0x5c/0x120 [dm_mod] [ 2245.527649] __dm_destroy+0x10e/0x1c0 [dm_mod] [ 2245.532102] dev_remove+0x117/0x190 [dm_mod] [ 2245.536384] ctl_ioctl+0x1a2/0x290 [dm_mod] [ 2245.540579] dm_ctl_ioctl+0xa/0x20 [dm_mod] [ 2245.544773] __x64_sys_ioctl+0x8a/0xc0 [ 2245.548524] do_syscall_64+0x5c/0x90 [ 2245.552104] ? syscall_exit_to_user_mode+0x12/0x30 [ 2245.556897] ? do_syscall_64+0x69/0x90 [ 2245.560648] ? do_syscall_64+0x69/0x90 [ 2245.564394] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 2245.569447] RIP: 0033:0x7fe52583ec6b ... [ 2245.646771] ------------[ cut here ]------------ [ 2245.651395] kmem_cache_destroy bt_work: Slab cache still has objects when called from btracker_destroy+0x12/0x20 [dm_cache] [ 2245.651408] WARNING: CPU: 7 PID: 10805 at mm/sla

Affected

10 ranges

Vendor	Product	Version range	Fixed in
debian	linux	< linux 6.1.20-1 (bookworm)	linux 6.1.20-1 (bookworm)
linux	linux	—	—
linux	linux	>= b29d4986d0da1a27cd35917cdb433672f5c95d7f < 673a3af21d5e3ed769f3eaed0c888244290a3506	673a3af21d5e3ed769f3eaed0c888244290a3506
linux	linux	>= b29d4986d0da1a27cd35917cdb433672f5c95d7f < ed56ad5cacb7a3aeb611494d5d66e2399d2bfecc	ed56ad5cacb7a3aeb611494d5d66e2399d2bfecc
linux	linux	>= b29d4986d0da1a27cd35917cdb433672f5c95d7f < 95ab80a8a0fef2ce0cc494a306dd283948066ce7	95ab80a8a0fef2ce0cc494a306dd283948066ce7
linux	linux_kernel	>= 0 < 6.1.20-1	6.1.20-1
linux	linux_kernel	>= 0 < 6.1.20-1	6.1.20-1
linux	linux_kernel	>= 0 < 6.1.20-1	6.1.20-1
linux	linux_kernel	>= 4.12.0 < 6.1.16	6.1.16
linux	linux_kernel	>= 6.2.0 < 6.2.3	6.2.3

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.