CVE-2022-50753

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Source
https://cve.org/CVERecord?id=CVE-2022-50753
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50753.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2022-50753
Downstream
Published
2025-12-24T13:05:47.559Z
Modified
2026-04-02T08:28:44.701862Z
Summary
f2fs: fix to do sanity check on summary info
Details

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

f2fs: fix to do sanity check on summary info

As Wenqing Liu reported in bugzilla:

https://bugzilla.kernel.org/show_bug.cgi?id=216456

BUG: KASAN: use-after-free in recover_data+0x63ae/0x6ae0 [f2fs] Read of size 4 at addr ffff8881464dcd80 by task mount/1013

CPU: 3 PID: 1013 Comm: mount Tainted: G W 6.0.0-rc4 #1 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.15.0-1 04/01/2014 Call Trace: dumpstacklvl+0x45/0x5e printreport.cold+0xf3/0x68d kasanreport+0xa8/0x130 recoverdata+0x63ae/0x6ae0 [f2fs] f2fsrecoverfsyncdata+0x120d/0x1fc0 [f2fs] f2fsfillsuper+0x4665/0x61e0 [f2fs] mountbdev+0x2cf/0x3b0 legacygettree+0xed/0x1d0 vfsgettree+0x81/0x2b0 pathmount+0x47e/0x19d0 do_mount+0xce/0xf0 __x64sysmount+0x12c/0x1a0 dosyscall64+0x38/0x90 entrySYSCALL64afterhwframe+0x63/0xcd

The root cause is: in fuzzed image, SSA table is corrupted: ofsinnode is larger than ADDRSPERPAGE(), result in out-of-range access on 4k-size page.

  • recover_data
    • dorecoverdata
      • checkindexinprevnodes
        • f2fsdatablkaddr

This patch adds sanity check on summary info in recovery and GC flow in where the flows rely on them.

After patch: [ 29.310883] F2FS-fs (loop0): Inconsistent ofsinnode:65286 in summary, ino:0, nid:6, max:1018

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50753.json"
}
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
b292dcab068e141d8a820b77cbcc88d98c610eb4
Fixed
c99860f9a75079f339ed7670425b1ac58f26e2ff
Fixed
4a8e8bf280703e04e0b9d91f101e1fdd9a5bd09e
Fixed
73687c53919f49dff3852155621dab7a35c52854
Fixed
e168f819bfa42459b14f479e55ebd550bcc78899
Fixed
0922ad64ccefa3e483e84355942b86e13c8fea68
Fixed
c6ad7fd16657ebd34a87a97d9588195aae87597d

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50753.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
3.11.0
Fixed
5.4.220
Type
ECOSYSTEM
Events
Introduced
5.5.0
Fixed
5.10.150
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.75
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
5.19.17
Type
ECOSYSTEM
Events
Introduced
5.20.0
Fixed
6.0.3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50753.json"