Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: tunnels: load network headers after skb_cow() in iptunnel_pmtud_build_icmp[v6]() Sashiko found that iptunnel_pmtud_build_icmp() and iptunnel_pmtud_build_icmpv6() were caching ip_hdr() and ipv6_hdr() before an skb_cow() call which can reallocate skb->head. Fix this possible UAF by initializing the local variables after the skb_cow() call. Remove skb_reset_network_header() calls which were not needed.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 4cb47a8644cc9eb8ec81190a50e79e6530d0297f before 95b6d772bfe788331d9742d73eaa12e113b2adc4; affected 4cb47a8644cc9eb8ec81190a50e79e6530d0297f before 7254aef4d1a7e18e887af9010e2f2dc34806789b; affected 4cb47a8644cc9eb8ec81190a50e79e6530d0297f before bf8b3f34c37c162357138e7c0942723b8b94fed1; affected 4cb47a8644cc9eb8ec81190a50e79e6530d0297f before 76cd9398a0470257ab765bdf5f358a2af2e17934; affected 4cb47a8644cc9eb8ec81190a50e79e6530d0297f before 50750d86a2e5266aba0c295483b3397843198b11; affected 4cb47a8644cc9eb8ec81190a50e79e6530d0297f before 6dff77899b9e9fe5d854abda3a98ad04e7229ef7; affected 4cb47a8644cc9eb8ec81190a50e79e6530d0297f before f3f204541f280a6ecb04503a0d6794d93990ca43; affected 4cb47a8644cc9eb8ec81190a50e79e6530d0297f before b4bc94353050b1fa7b702bd4c6600710dd926cff |
| Linux / Linux | affected 5.9; unaffected 0 before 5.9; unaffected 5.10.259 through 5.10.*; unaffected 5.15.210 through 5.15.*; unaffected 6.1.176 through 6.1.*; unaffected 6.6.143 through 6.6.*; unaffected 6.12.93 through 6.12.*; unaffected 6.18.35 through 6.18.*; unaffected 7.0.12 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/95b6d772bfe788331d9742d73eaa12e113b2adc4
- https://git.kernel.org/stable/c/7254aef4d1a7e18e887af9010e2f2dc34806789b
- https://git.kernel.org/stable/c/bf8b3f34c37c162357138e7c0942723b8b94fed1
- https://git.kernel.org/stable/c/76cd9398a0470257ab765bdf5f358a2af2e17934
- https://git.kernel.org/stable/c/50750d86a2e5266aba0c295483b3397843198b11
- https://git.kernel.org/stable/c/6dff77899b9e9fe5d854abda3a98ad04e7229ef7
- https://git.kernel.org/stable/c/f3f204541f280a6ecb04503a0d6794d93990ca43
- https://git.kernel.org/stable/c/b4bc94353050b1fa7b702bd4c6600710dd926cff
ADP enrichment
No English description supplied.
No references supplied.