vsock/virtio: fix potential unbounded skb queue
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 6.2, 6.12.94, 6.18.36, 7.0.13
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: fix potential unbounded skb queue virtio_transport_inc_rx_pkt() checks vvs->rx_bytes + len > vvs->buf_alloc. virtio_transport_recv_enqueue() skips coalescing for packets with VIRTIO_VSOCK_SEQ_EOM. If fed with packets with len == 0 and VIRTIO_VSOCK_SEQ_EOM, a very large number of packets can be queued because vvs->rx_bytes stays at 0. Fix this by estimating the skb metadata size: (Number of skbs in the queue) * SKB_TRUESIZE(0)
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Linux Linux
From 077706165717686a2a6a71405fef036cd5b37ae0 · fixed in 1eca304f97a34ed5e921e1f0e06c8b241f25bf12; From 077706165717686a2a6a71405fef036cd5b37ae0 · fixed in 9bdc637fde66b63d6cad0caacd034888bb7bf5f5; From 077706165717686a2a6a71405fef036cd5b37ae0 · fixed in 100d5b2ffdc6468b9e48532641f29e83efdcb63c; From 077706165717686a2a6a71405fef036cd5b37ae0 · fixed in 059b7dbd20a6f0c539a45ddff1573cb8946685b5; From 6.1.63 · fixed in 6.2
- Linux Linux
6.3
- KernelLinux
From 6.3.0 · fixed in 6.12.94; From 6.13.0 · fixed in 6.18.36; From 6.19.0 · fixed in 7.0.13