CVE-2022-48830
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2022-48830
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-48830.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2022-48830
- Related
- Published
- 2024-07-16T12:15:06Z
- Modified
- 2024-09-11T04:43:04.785656Z
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
can: isotp: fix potential CAN frame reception race in isotp_rcv()
When receiving a CAN frame the current code logic does not consider concurrently receiving processes which do not show up in real world usage.
Ziyang Xuan writes:
The following syz problem is one of the scenarios. so->rx.len is changed by isotprcvff() during isotprcvcf(), so->rx.len equals 0 before allocskb() and equals 4096 after allocskb(). That will trigger skboverpanic() in skb_put().
======================================================= CPU: 1 PID: 19 Comm: ksoftirqd/1 Not tainted 5.16.0-rc8-syzkaller #0 RIP: 0010:skbpanic+0x16c/0x16e net/core/skbuff.c:113 Call Trace: <TASK> skboverpanic net/core/skbuff.c:118 [inline] skbput.cold+0x24/0x24 net/core/skbuff.c:1990 isotprcvcf net/can/isotp.c:570 [inline] isotprcv+0xa38/0x1e30 net/can/isotp.c:668 deliver net/can/afcan.c:574 [inline] canrcvfilter+0x445/0x8d0 net/can/afcan.c:635 canreceive+0x31d/0x580 net/can/afcan.c:665 canrcv+0x120/0x1c0 net/can/afcan.c:696 _netifreceiveskbonecore+0x114/0x180 net/core/dev.c:5465 _netifreceive_skb+0x24/0x1b0 net/core/dev.c:5579
Therefore we make sure the state changes and data structures stay consistent at CAN frame reception time by adding a spinlock in isotprcv(). This fixes the issue reported by syzkaller but does not affect real world operation.
- References
-
- https://git.kernel.org/stable/c/5b068f33bc8acfcfd5ea7992a2dafb30d89bad30
- https://git.kernel.org/stable/c/7b53d2204ce79b27a878074a77d64f40ec21dbca
- https://git.kernel.org/stable/c/7c759040c1dd03954f650f147ae7175476d51314
- https://git.kernel.org/stable/c/f90cc68f9f4b5d8585ad5d0a206a9d37ac299ef3
- https://security-tracker.debian.org/tracker/CVE-2022-48830
Affected packages
Debian:11 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed5.10.103-1
Debian:12 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:13 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source