DEBIAN-CVE-2022-50673

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Source
https://security-tracker.debian.org/tracker/CVE-2022-50673
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-50673.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2022-50673
Upstream
Published
2025-12-09T16:17:19.473Z
Modified
2025-12-10T10:16:38.285593Z
Summary
[none]
Details

In the Linux kernel, the following vulnerability has been resolved: ext4: fix use-after-free in ext4orphancleanup I caught a issue as follows: ================================================================== BUG: KASAN: use-after-free in _listaddvalid+0x28/0x1a0 Read of size 8 at addr ffff88814b13f378 by task mount/710 CPU: 1 PID: 710 Comm: mount Not tainted 6.1.0-rc3-next #370 Call Trace: <TASK> dumpstacklvl+0x73/0x9f printreport+0x25d/0x759 kasanreport+0xc0/0x120 _asanload8+0x99/0x140 _listaddvalid+0x28/0x1a0 ext4orphancleanup+0x564/0x9d0 [ext4] _ext4fillsuper+0x48e2/0x5300 [ext4] ext4fillsuper+0x19f/0x3a0 [ext4] gettreebdev+0x27b/0x450 ext4gettree+0x19/0x30 [ext4] vfsgettree+0x49/0x150 pathmount+0xaae/0x1350 domount+0xe2/0x110 _x64sysmount+0xf0/0x190 dosyscall64+0x35/0x80 entrySYSCALL64afterhwframe+0x63/0xcd </TASK> [...] ================================================================== Above issue may happen as follows: ------------------------------------- ext4fillsuper ext4orphancleanup --- loop1: assume lastorphan is 12 --- listadd(&EXT4I(inode)->iorphan, &EXT4SB(sb)->sorphan) ext4truncate --> return 0 ext4inodeattachjinode --> return -ENOMEM iput(inode) --> free inode<12> --- loop2: lastorphan is still 12 --- listadd(&EXT4I(inode)->iorphan, &EXT4SB(sb)->sorphan); // use inode<12> and trigger UAF To solve this issue, we need to propagate the return value of ext4inodeattach_jinode() appropriately.

References

Affected packages

Debian:11 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.10.178-1

Affected versions

5.*

5.10.46-4
5.10.46-5
5.10.70-1~bpo10+1
5.10.70-1
5.10.84-1
5.10.92-1~bpo10+1
5.10.92-1
5.10.92-2
5.10.103-1~bpo10+1
5.10.103-1
5.10.106-1
5.10.113-1
5.10.120-1~bpo10+1
5.10.120-1
5.10.127-1
5.10.127-2~bpo10+1
5.10.127-2
5.10.136-1
5.10.140-1
5.10.148-1
5.10.149-1
5.10.149-2
5.10.158-1
5.10.158-2
5.10.162-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source

"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-50673.json"

Debian:12 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.1.4-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source

"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-50673.json"

Debian:13 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.1.4-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source

"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-50673.json"

Debian:14 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.1.4-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source

"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-50673.json"