CVE-2024-26631

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Source
https://nvd.nist.gov/vuln/detail/CVE-2024-26631
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-26631.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2024-26631
Related
Published
2024-03-18T11:15:09Z
Modified
2024-09-18T03:26:00.024013Z
Summary
[none]
Details

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

ipv6: mcast: fix data-race in ipv6mcdown / mldifcwork

idev->mcifccount can be written over without proper locking.

Originally found by syzbot [1], fix this issue by encapsulating calls to mldifcstopwork() (and mldgqstopwork() for good measure) with mutexlock() and mutexunlock() accordingly as these functions should only be called with mc_lock per their declarations.

[1] BUG: KCSAN: data-race in ipv6mcdown / mldifcwork

write to 0xffff88813a80c832 of 1 bytes by task 3771 on cpu 0: mldifcstopwork net/ipv6/mcast.c:1080 [inline] ipv6mcdown+0x10a/0x280 net/ipv6/mcast.c:2725 addrconfifdown+0xe32/0xf10 net/ipv6/addrconf.c:3949 addrconfnotify+0x310/0x980 notifiercallchain kernel/notifier.c:93 [inline] rawnotifiercallchain+0x6b/0x1c0 kernel/notifier.c:461 _devnotifyflags+0x205/0x3d0 devchangeflags+0xab/0xd0 net/core/dev.c:8685 dosetlink+0x9f6/0x2430 net/core/rtnetlink.c:2916 rtnlgroupchangelink net/core/rtnetlink.c:3458 [inline] _rtnlnewlink net/core/rtnetlink.c:3717 [inline] rtnlnewlink+0xbb3/0x1670 net/core/rtnetlink.c:3754 rtnetlinkrcvmsg+0x807/0x8c0 net/core/rtnetlink.c:6558 netlinkrcvskb+0x126/0x220 net/netlink/afnetlink.c:2545 rtnetlinkrcv+0x1c/0x20 net/core/rtnetlink.c:6576 netlinkunicastkernel net/netlink/afnetlink.c:1342 [inline] netlinkunicast+0x589/0x650 net/netlink/afnetlink.c:1368 netlinksendmsg+0x66e/0x770 net/netlink/afnetlink.c:1910 ...

write to 0xffff88813a80c832 of 1 bytes by task 22 on cpu 1: mldifcwork+0x54c/0x7b0 net/ipv6/mcast.c:2653 processonework kernel/workqueue.c:2627 [inline] processscheduledworks+0x5b8/0xa30 kernel/workqueue.c:2700 worker_thread+0x525/0x730 kernel/workqueue.c:2781 ...

References

Affected packages

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
6.1.76-1

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

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
6.6.15-1

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

Ecosystem specific 

{
    "urgency": "not yet assigned"
}