dccp: Fix out of bounds access in DCCP error handler
In the Linux kernel, the following vulnerability has been resolved: dccp: Fix out of bounds access in DCCP error handler There was a previous attempt to fix an out-of-bounds access in the DCCP error handlers, but that fix assumed that the error handlers only want to access the first 8 bytes of the DCCP header. Actually, they also look at the DCCP sequence number, which is stored beyond 8 bytes, so an explicit pskb_may_pull() is required.
02 / AFFECTED SOFTWARE
Affected packages
776 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: dccp: Fix out of bounds access in DCCP error handler There was a previous attempt to fix an out-of-bounds access in the DCCP error handlers, but that fix assumed that the error handlers only want to access the first 8 bytes of the DCCP header. Actually, they also look at the DCCP sequence number, which is stored beyond 8 bytes, so an explicit pskb_may_pull() is required.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/177212bf6dc1ff2d13d0409cddc5c9e81feec63d
- https://git.kernel.org/stable/c/3533e10272555c422a7d51ebc0ce8c483429f7f2
- https://git.kernel.org/stable/c/4b8a938e329ae4eb54b73b0c87b5170607b038a8
- https://git.kernel.org/stable/c/6ecf09699eb1554299aa1e7fd13e9e80f656c2f9
- https://git.kernel.org/stable/c/7a7dd70cb954d3efa706a429687ded88c02496fa
- https://git.kernel.org/stable/c/977ad86c2a1bcaf58f01ab98df5cc145083c489c
- https://git.kernel.org/stable/c/d8171411a661253e6271fa10b65b46daf1b6471c
- https://git.kernel.org/stable/c/ec620c34f5fa5d055f9f6136a387755db6157712
- https://git.kernel.org/stable/c/f8a7f10a1dccf9868ff09342a73dce27501b86df
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53782.json
- https://nvd.nist.gov/vuln/detail/CVE-2023-53782