CVE-2024-39301

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Source
https://nvd.nist.gov/vuln/detail/CVE-2024-39301
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-39301.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2024-39301
Related
Published
2024-06-25T15:15:14Z
Modified
2024-09-18T03:26:29.169971Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

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

net/9p: fix uninit-value in p9clientrpc()

Syzbot with the help of KMSAN reported the following error:

BUG: KMSAN: uninit-value in trace9pclientres include/trace/events/9p.h:146 [inline] BUG: KMSAN: uninit-value in p9clientrpc+0x1314/0x1340 net/9p/client.c:754 trace9pclientres include/trace/events/9p.h:146 [inline] p9clientrpc+0x1314/0x1340 net/9p/client.c:754 p9clientcreate+0x1551/0x1ff0 net/9p/client.c:1031 v9fssessioninit+0x1b9/0x28e0 fs/9p/v9fs.c:410 v9fsmount+0xe2/0x12b0 fs/9p/vfssuper.c:122 legacygettree+0x114/0x290 fs/fscontext.c:662 vfsgettree+0xa7/0x570 fs/super.c:1797 donewmount+0x71f/0x15e0 fs/namespace.c:3352 pathmount+0x742/0x1f20 fs/namespace.c:3679 domount fs/namespace.c:3692 [inline] _dosysmount fs/namespace.c:3898 [inline] _sesysmount+0x725/0x810 fs/namespace.c:3875 _x64sysmount+0xe4/0x150 fs/namespace.c:3875 dosyscall64+0xd5/0x1f0 entrySYSCALL64afterhwframe+0x6d/0x75

Uninit was created at: allocpages+0x9d6/0xe70 mm/pagealloc.c:4598 _allocpagesnode include/linux/gfp.h:238 [inline] allocpagesnode include/linux/gfp.h:261 [inline] allocslabpage mm/slub.c:2175 [inline] allocateslab mm/slub.c:2338 [inline] newslab+0x2de/0x1400 mm/slub.c:2391 _slaballoc+0x1184/0x33d0 mm/slub.c:3525 _slaballoc mm/slub.c:3610 [inline] _slaballocnode mm/slub.c:3663 [inline] slaballocnode mm/slub.c:3835 [inline] kmemcachealloc+0x6d3/0xbe0 mm/slub.c:3852 p9tagalloc net/9p/client.c:278 [inline] p9clientpreparereq+0x20a/0x1770 net/9p/client.c:641 p9clientrpc+0x27e/0x1340 net/9p/client.c:688 p9clientcreate+0x1551/0x1ff0 net/9p/client.c:1031 v9fssessioninit+0x1b9/0x28e0 fs/9p/v9fs.c:410 v9fsmount+0xe2/0x12b0 fs/9p/vfssuper.c:122 legacygettree+0x114/0x290 fs/fscontext.c:662 vfsgettree+0xa7/0x570 fs/super.c:1797 donewmount+0x71f/0x15e0 fs/namespace.c:3352 pathmount+0x742/0x1f20 fs/namespace.c:3679 domount fs/namespace.c:3692 [inline] _dosysmount fs/namespace.c:3898 [inline] _sesysmount+0x725/0x810 fs/namespace.c:3875 _x64sysmount+0xe4/0x150 fs/namespace.c:3875 dosyscall64+0xd5/0x1f0 entrySYSCALL64afterhwframe+0x6d/0x75

If p9checkerrors() fails early in p9clientrpc(), req->rc.tag will not be properly initialized. However, trace9pclientres() ends up trying to print it out anyway before p9client_rpc() finishes.

Fix this issue by assigning default values to p9_fcall fields such as 'tag' and (just in case KMSAN unearths something new) 'id' during the tag allocation stage.

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
5.10.221-1

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
5.10.178-1
5.10.178-2
5.10.178-3
5.10.179-1
5.10.179-2
5.10.179-3
5.10.179-4
5.10.179-5
5.10.191-1
5.10.197-1
5.10.205-1
5.10.205-2
5.10.209-1
5.10.209-2
5.10.216-1
5.10.218-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

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
6.1.94-1

Affected versions

6.*

6.1.27-1
6.1.37-1
6.1.38-1
6.1.38-2~bpo11+1
6.1.38-2
6.1.38-3
6.1.38-4~bpo11+1
6.1.38-4
6.1.52-1
6.1.55-1~bpo11+1
6.1.55-1
6.1.64-1
6.1.66-1
6.1.67-1
6.1.69-1~bpo11+1
6.1.69-1
6.1.76-1~bpo11+1
6.1.76-1
6.1.82-1
6.1.85-1
6.1.90-1~bpo11+1
6.1.90-1
6.1.94-1~bpo11+1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

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
6.9.7-1

Affected versions

6.*

6.1.27-1
6.1.37-1
6.1.38-1
6.1.38-2~bpo11+1
6.1.38-2
6.1.38-3
6.1.38-4~bpo11+1
6.1.38-4
6.1.52-1
6.1.55-1~bpo11+1
6.1.55-1
6.1.64-1
6.1.66-1
6.1.67-1
6.1.69-1~bpo11+1
6.1.69-1
6.1.76-1~bpo11+1
6.1.76-1
6.1.82-1
6.1.85-1
6.1.90-1~bpo11+1
6.1.90-1
6.1.94-1~bpo11+1
6.1.94-1
6.1.98-1
6.1.99-1
6.1.106-1
6.1.106-2
6.1.106-3
6.3.1-1~exp1
6.3.2-1~exp1
6.3.4-1~exp1
6.3.5-1~exp1
6.3.7-1~bpo12+1
6.3.7-1
6.3.11-1
6.4~rc6-1~exp1
6.4~rc7-1~exp1
6.4.1-1~exp1
6.4.4-1~bpo12+1
6.4.4-1
6.4.4-2
6.4.4-3~bpo12+1
6.4.4-3
6.4.11-1
6.4.13-1
6.5~rc4-1~exp1
6.5~rc6-1~exp1
6.5~rc7-1~exp1
6.5.1-1~exp1
6.5.3-1~bpo12+1
6.5.3-1
6.5.6-1
6.5.8-1
6.5.10-1~bpo12+1
6.5.10-1
6.5.13-1
6.6.3-1~exp1
6.6.4-1~exp1
6.6.7-1~exp1
6.6.8-1
6.6.9-1
6.6.11-1
6.6.13-1~bpo12+1
6.6.13-1
6.6.15-1
6.6.15-2
6.7-1~exp1
6.7.1-1~exp1
6.7.4-1~exp1
6.7.7-1
6.7.9-1
6.7.9-2
6.7.12-1~bpo12+1
6.7.12-1
6.8.9-1
6.8.11-1
6.8.12-1~bpo12+1
6.8.12-1
6.9.2-1~exp1
6.9.7-1~bpo12+1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}