CVE-2026-98573
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
net: skbuff: fix pull-bound underflow in skb_checksum_setup_ipv6()
In the Linux kernel, the following vulnerability has been resolved: net: skbuff: fix pull-bound underflow in skb_checksum_setup_ipv6() skb_maybe_pull_tail() subtracts skb_headlen(skb) from the unsigned max argument and passes the result to __pskb_pull_tail() as a signed int. The function does not ensure that max is at least skb_headlen(skb). This can happen while parsing IPv6 extension headers when an skb already has a linear area larger than MAX_IPV6_HDR_LEN. Once the parser needs data beyond the linear area, max - skb_headlen(skb) wraps and is converted to a negative delta. __pskb_pull_tail() then passes that negative length to skb_copy_bits(), where it can become a very large copy length. Pass the requested length itself as the pull bound at the three extension-header call sites, so the delta can no longer go negative.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 1431fb31ecbaba1b5718006128f0f2ed0b94e1c3 | affected | git | 9c4e432132a97b82edf28fa172c39f743e6bfb26 | Unavailable | None listed |
| 1431fb31ecbaba1b5718006128f0f2ed0b94e1c3 | affected | git | 718747afa5463d9cc5fd9a09f03b2a492edd9b78 | Unavailable | None listed |
| 1431fb31ecbaba1b5718006128f0f2ed0b94e1c3 | affected | git | a0ad0473c09d2e947aecac5c82e637ec85924b12 | Unavailable | None listed |
| 1431fb31ecbaba1b5718006128f0f2ed0b94e1c3 | affected | git | b2da5ed3d8c75e1b729a21b6d3beaed415e263f6 | Unavailable | None listed |
| 1431fb31ecbaba1b5718006128f0f2ed0b94e1c3 | affected | git | 6c28c31f051dbf49c71ba7ab7bb9bc905fa1d14b | Unavailable | None listed |
| 1431fb31ecbaba1b5718006128f0f2ed0b94e1c3 | affected | git | cfa643f2ca36c6f913fe1a2ceb12412ebb0fd962 | Unavailable | None listed |
| 1431fb31ecbaba1b5718006128f0f2ed0b94e1c3 | affected | git | d7f474226809471dc7877435e9c492cc914df0bf | Unavailable | None listed |
| 1431fb31ecbaba1b5718006128f0f2ed0b94e1c3 | affected | git | 3b4e0b0c008a8c1b474730248cd5b873026c74bd | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 3.13 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 3.13 | Unavailable | None listed |
| 5.10.271 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.222 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.189 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.158 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.112 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.55 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.2.9 | unaffected | semver | Unavailable | 7.2.* | None listed |
| 7.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |