CVE-2026-98241
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)
ipv6: xfrm: use full sockets in local error paths
In the Linux kernel, the following vulnerability has been resolved: ipv6: xfrm: use full sockets in local error paths xfrm6_local_rxpmtu() and xfrm6_local_error() dereference skb->sk as if it always pointed at a full IPv6 socket. That is not guaranteed. TCP SYN-ACK skbs can be owned by a TCP_NEW_SYN_RECV request_sock while the output path itself is driven by the full listener. If rerouting selects an IPv6 XFRM tunnel route with a lower MTU, the local PMTU/error handling path can reach these callbacks with that mini-socket still attached to the skb. The callbacks then miscast the request socket as a full inet/IPv6 socket and can read beyond the request_sock allocation when they access inet_sock or ipv6_pinfo state. Resolve the owner with skb_to_full_sk() in both callbacks and bail out when no full socket is attached. This matches the surrounding XFRM IPv6 PMTU/error logic, which already reasons about full sockets with skb_to_full_sk().
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) |
|---|---|---|---|---|---|
| dd767856a36e00b631d65ebc4bb81b19915532d6 | affected | git | b1a88633c36d2cbc3831382f3846754d344276fd | Unavailable | None listed |
| dd767856a36e00b631d65ebc4bb81b19915532d6 | affected | git | 904a0e827d0d7189271a3a2eb648293809f25efc | Unavailable | None listed |
| dd767856a36e00b631d65ebc4bb81b19915532d6 | affected | git | 675919e08ce266b8cac11fd9af29170e762a480f | Unavailable | None listed |
| dd767856a36e00b631d65ebc4bb81b19915532d6 | affected | git | 60459c670329d586a58db5d8f811fa5accfe4862 | Unavailable | None listed |
| dd767856a36e00b631d65ebc4bb81b19915532d6 | affected | git | ca3d68c3213475b53db6647e159dc73bd1af5ab1 | Unavailable | None listed |
| dd767856a36e00b631d65ebc4bb81b19915532d6 | affected | git | 4c030a0400ebfd2318361c923a88103b2c67c49f | Unavailable | None listed |
| dd767856a36e00b631d65ebc4bb81b19915532d6 | affected | git | c21f3f7fbfeda7c5794f606cb0ffcc2d9001eef8 | Unavailable | None listed |
| dd767856a36e00b631d65ebc4bb81b19915532d6 | affected | git | 6973a21ee73c5567f883813c8ef414774b45892f | 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) |
|---|---|---|---|---|---|
| 3.2 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 3.2 | 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 |
| 6.18.54 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.2.8 | unaffected | semver | Unavailable | 7.2.* | None listed |
| 7.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |