CVE-2026-63993
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)
vxlan: do not reuse cached ip_hdr() value after skb_tunnel_check_pmtu()
In the Linux kernel, the following vulnerability has been resolved: vxlan: do not reuse cached ip_hdr() value after skb_tunnel_check_pmtu() skb_tunnel_check_pmtu() can change skb->head. Reusing old_iph afer skb_tunnel_check_pmtu() can cause an UAF. Use instead ip_hdr(skb) as done in drivers/net/bareudp.c and drivers/net/geneve.c. Found by Sashiko.
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) |
|---|---|---|---|---|---|
| 4cb47a8644cc9eb8ec81190a50e79e6530d0297f | affected | git | 6b8bfce9d2f774d2c2243e0248e03efb99bba6c0 | Unavailable | None listed |
| 4cb47a8644cc9eb8ec81190a50e79e6530d0297f | affected | git | 9257f56ac47ef1976bcd056cf986a9988eeec67a | Unavailable | None listed |
| 4cb47a8644cc9eb8ec81190a50e79e6530d0297f | affected | git | 8d435d68d71fb875876b722f4136caf74f2f48bd | Unavailable | None listed |
| 4cb47a8644cc9eb8ec81190a50e79e6530d0297f | affected | git | dc3bfa050f873371e745bdf478b1f5b738e5733d | Unavailable | None listed |
| 4cb47a8644cc9eb8ec81190a50e79e6530d0297f | affected | git | 609e63312c29aad18026a1d3222e123d4b6b0feb | Unavailable | None listed |
| 4cb47a8644cc9eb8ec81190a50e79e6530d0297f | affected | git | 5303925e360527243b46a440a04667826bbc72b7 | Unavailable | None listed |
| 4cb47a8644cc9eb8ec81190a50e79e6530d0297f | affected | git | a493efd4336cf19122ae0e4cbb3d31b32d70deea | Unavailable | None listed |
| 4cb47a8644cc9eb8ec81190a50e79e6530d0297f | affected | git | 7d9ef0cb271555d8cf39fefe6c981e1493b25ecf | 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) |
|---|---|---|---|---|---|
| 5.9 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.9 | Unavailable | None listed |
| 5.10.259 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.210 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.176 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.143 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.93 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.35 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.0.12 | unaffected | semver | Unavailable | 7.0.* | None listed |
| 7.1 | unaffected | original_commit_for_fix | Unavailable | * | None listed |