CVE-2023-52922

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Source
https://cve.org/CVERecord?id=CVE-2023-52922
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-52922.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2023-52922
Downstream
Related
Published
2024-11-28T15:09:51.360Z
Modified
2026-03-20T12:32:53.011276Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
can: bcm: Fix UAF in bcm_proc_show()
Details

In the Linux kernel, the following vulnerability has been resolved:

can: bcm: Fix UAF in bcmprocshow()

BUG: KASAN: slab-use-after-free in bcmprocshow+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> dumpstacklvl+0xd5/0x150 printreport+0xc1/0x5e0 kasanreport+0xba/0xf0 bcmprocshow+0x969/0xa80 seqreaditer+0x4f6/0x1260 seqread+0x165/0x210 procregread+0x227/0x300 vfsread+0x1d5/0x8d0 ksysread+0x11e/0x240 dosyscall64+0x35/0xb0 entrySYSCALL64after_hwframe+0x63/0xcd

Allocated by task 7846: kasansavestack+0x1e/0x40 kasansettrack+0x21/0x30 __kasankmalloc+0x9e/0xa0 bcmsendmsg+0x264b/0x44e0 sock_sendmsg+0xda/0x180 ____sys_sendmsg+0x735/0x920 ___sys_sendmsg+0x11d/0x1b0 _syssendmsg+0xfa/0x1d0 dosyscall64+0x35/0xb0 entrySYSCALL64afterhwframe+0x63/0xcd

Freed by task 7846: kasansavestack+0x1e/0x40 kasansettrack+0x21/0x30 kasansavefree_info+0x27/0x40 ____kasanslabfree+0x161/0x1c0 slabfreefreelist_hook+0x119/0x220 _kmemcachefree+0xb4/0x2e0 rcucore+0x809/0x1bd0

bcmop is freed before procfs entry be removed in bcmrelease(), this lead to bcmprocshow() may read the freed bcm_op.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52922.json",
    "cna_assigner": "Linux"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
ffd980f976e7fd666c2e61bf8ab35107efd11828
Fixed
11b8e27ed448baa385d90154a141466bd5e92f18
Fixed
9b58d36d0c1ea29a9571e0222a9c29df0ccfb7ff
Fixed
9533dbfac0ff7edd77a5fa2c24974b1d66c8b0a6
Fixed
cf254b4f68e480e73dab055014e002b77aed30ed
Fixed
3c3941bb1eb53abe7d640ffee5c4d6b559829ab3
Fixed
995f47d76647708ec26c6e388663ad4f3f264787
Fixed
dfd0aa26e9a07f2ce546ccf8304ead6a2914e8a7
Fixed
55c3b96074f3f9b0aee19bf93cd71af7516582bb

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-52922.json"