What’s Vulnerable › Vulnerabilities
CVE-2023-53782: dccp: Fix out of bounds access in DCCP error handler
- Severity: unknown
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2025-12-09 · updated 2026-06-17
Description
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.
Affected products
- Linux kernel: from 3.2.87 before 3.3; from 3.10.105 before 3.11; from 3.12.68 before 3.13; from 3.16.42 before 3.17; from 4.4.34 before 4.5; from 4.8.10 before 4.9 — fixed in 3.11, 3.13, 3.17, 3.3, 4.5, 4.9
How to fix
Upgrade to a fixed version: Linux kernel 3.11, 3.13, 3.17, 3.3. Check the vendor advisory for mitigations.
References
- 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
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