net: pull headers in qdisc_pkt_len_segs_init()
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 6.6.160, 6.12.114, 7.0.10
- 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: net: pull headers in qdisc_pkt_len_segs_init() Most ndo_start_xmit() methods expects headers of gso packets to be already in skb->head. net/core/tso.c users are particularly at risk, because tso_build_hdr() does a memcpy(hdr, skb->data, hdr_len); qdisc_pkt_len_segs_init() already does a dissection of gso packets. Use pskb_may_pull() instead of skb_header_pointer() to make sure drivers do not have to reimplement this. Some malicious packets could be fed, detect them so that we can drop them sooner with a new SKB_DROP_REASON_SKB_BAD_GSO drop_reason.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Linux Linux
From e876f208af18b074f800656e4d1b99da75b2135f · fixed in 5895cfc76924a629c6eaa5e5f049de642860045f; From e876f208af18b074f800656e4d1b99da75b2135f · fixed in 7564dc804d8289d2e5c6edb8173754051b71bff4; From e876f208af18b074f800656e4d1b99da75b2135f · fixed in 9d4f5c68f5ad4ab425f3ce1500c97c9f9743999a; From e876f208af18b074f800656e4d1b99da75b2135f · fixed in 7fb4c19670110f052c04e1ec1d2b953b9f4f57e4
- Linux Linux
3.16
- KernelLinux
From 3.16.0 · fixed in 6.6.160; From 6.7.0 · fixed in 6.12.114; From 6.13.0 · fixed in 7.0.10