Answer in brief
CVE-2023-52922 records a High severity (CVSS 7.8) vulnerability in can: bcm: Fix UAF in bcm_proc_show(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=ffd980f976e7fd666c2e61bf8ab35107efd11828 <11b8e27ed448baa385d90154a141466bd5e92f18 || >=ffd980f976e7fd666c2e61bf8ab35107efd11828 <9b58d36d0c1ea29a9571e0222a9c29df0ccfb7ff || >=ffd980f976e7fd666c2e61bf8ab35107efd11828 <9533dbfac0ff7edd77a5fa2c24974b1d66c8b0a6 || >=ffd980f976e7fd666c2e61bf8ab35107efd11828 <cf254b4f68e480e73dab055014e002b77aed30ed || >=ffd980f976e7fd666c2e61bf8ab35107efd11828 <3c3941bb1eb53abe7d640ffee5c4d6b559829ab3 || >=ffd980f976e7fd666c2e61bf8ab35107efd11828 <995f47d76647708ec26c6e388663ad4f3f264787 || >=ffd980f976e7fd666c2e61bf8ab35107efd11828 <dfd0aa26e9a07f2ce546ccf8304ead6a2914e8a7 || >=ffd980f976e7fd666c2e61bf8ab35107efd11828 <55c3b96074f3f9b0aee19bf93cd71af7516582bb | 11b8e27ed448baa385d90154a141466bd5e92f18, 9b58d36d0c1ea29a9571e0222a9c29df0ccfb7ff, 9533dbfac0ff7edd77a5fa2c24974b1d66c8b0a6, cf254b4f68e480e73dab055014e002b77aed30ed, 3c3941bb1eb53abe7d640ffee5c4d6b559829ab3, 995f47d76647708ec26c6e388663ad4f3f264787, dfd0aa26e9a07f2ce546ccf8304ead6a2914e8a7, 55c3b96074f3f9b0aee19bf93cd71af7516582bb |
| Linux/Linuxgeneric | 2.6.25 | Not reported |
Published upstream
Nov 28, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: can: bcm: Fix UAF in bcm_proc_show() BUG: KASAN: slab-use-after-free in bcm_proc_show+0x969/0xa80 Read of size 8 at addr ffff888155846230 by task cat/7862 CPU: 1 PID: 7862 Comm: cat Not tainted 6.5.0-rc1-00153-gc8746099c197 #230 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 Call Trace: <TASK> dump_stack_lvl+0xd5/0x150 print_report+0xc1/0x5e0 kasan_report+0xba/0xf0 bcm_proc_show+0x969/0xa80 seq_read_iter+0x4f6/0x1260 seq_read+0x165/0x210 proc_reg_read+0x227/0x300 vfs_read+0x1d5/0x8d0 ksys_read+0x11e/0x240 do_syscall_64+0x35/0xb0 entry_SYSCALL_64_after_hwframe+0x63/0xcd Allocated by task 7846: kasan_save_stack+0x1e/0x40 kasan_set_track+0x21/0x30 __kasan_kmalloc+0x9e/0xa0 bcm_sendmsg+0x264b/0x44e0 sock_sendmsg+0xda/0x180 ____sys_sendmsg+0x735/0x920 ___sys_sendmsg+0x11d/0x1b0 __sys_sendmsg+0xfa/0x1d0 do_syscall_64+0x35/0xb0 entry_SYSCALL_64_after_hwframe+0x63/0xcd Freed by task 7846: kasan_save_stack+0x1e/0x40 kasan_set_track+0x21/0x30 kasan_save_free_info+0x27/0x40 ____kasan_slab_free+0x161/0x1c0 slab_free_freelist_hook+0x119/0x220 __kmem_cache_free+0xb4/0x2e0 rcu_core+0x809/0x1bd0 bcm_op is freed before procfs entry be removed in bcm_release(), this lead to bcm_proc_show() may read the freed bcm_op.
Quoted source text, attributed separately from HOL analysis.