CVE-2023-52922
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2023
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
can: bcm: Fix UAF in bcm_proc_show()
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| ffd980f976e7fd666c2e61bf8ab35107efd11828 | affected | git | 11b8e27ed448baa385d90154a141466bd5e92f18 | Unavailable | None listed |
| ffd980f976e7fd666c2e61bf8ab35107efd11828 | affected | git | 9b58d36d0c1ea29a9571e0222a9c29df0ccfb7ff | Unavailable | None listed |
| ffd980f976e7fd666c2e61bf8ab35107efd11828 | affected | git | 9533dbfac0ff7edd77a5fa2c24974b1d66c8b0a6 | Unavailable | None listed |
| ffd980f976e7fd666c2e61bf8ab35107efd11828 | affected | git | cf254b4f68e480e73dab055014e002b77aed30ed | Unavailable | None listed |
| ffd980f976e7fd666c2e61bf8ab35107efd11828 | affected | git | 3c3941bb1eb53abe7d640ffee5c4d6b559829ab3 | Unavailable | None listed |
| ffd980f976e7fd666c2e61bf8ab35107efd11828 | affected | git | 995f47d76647708ec26c6e388663ad4f3f264787 | Unavailable | None listed |
| ffd980f976e7fd666c2e61bf8ab35107efd11828 | affected | git | dfd0aa26e9a07f2ce546ccf8304ead6a2914e8a7 | Unavailable | None listed |
| ffd980f976e7fd666c2e61bf8ab35107efd11828 | affected | git | 55c3b96074f3f9b0aee19bf93cd71af7516582bb | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 2.6.25 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 2.6.25 | Unavailable | None listed |
| 4.14.322 | unaffected | semver | Unavailable | 4.14.* | None listed |
| 4.19.291 | unaffected | semver | Unavailable | 4.19.* | None listed |
| 5.4.251 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.188 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.123 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.42 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.4.7 | unaffected | semver | Unavailable | 6.4.* | None listed |
| 6.5 | unaffected | original_commit_for_fix | Unavailable | * | None listed |