dccp: Fix out of bounds access in DCCP error handler
Priority LOW 22Published · Updated
Key facts
- Attack vector
- —
- Privileges required
- —
- User interaction
- —
- Attack complexity
- —
- Impact type
- —
- Confidentiality · integrity · availability
- —
- Fix status
- Fixed
No CVSS vector from any source. Fix status from CNA.
Summary
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.
Why it matters now
EPSS 0.00237 14th percentileScored 2026-11-07
Fix Fixed Linux (Linux): 3.3, 3.11, 3.13 +12
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 3.2.87 to before 3.3; 3.10.105 to before 3.11; 3.12.68 to before 3.13; 3.16.42 to before 3.17; 4.4.34 to before 4.5; 4.8.10 to before 4.9 | 3.3, 3.11, 3.13, 3.17, 4.5, 4.9 | Patch available | CNA |
| Linux | Linux | 4.9 and later | 4.14.326, 4.19.295, 5.4.257, 5.10.195, 5.15.132, 6.1.53, 6.4.16, 6.5.3, 6.6 | Patch available | CNA |
- Linux VendorLinux Affected 3.2.87 to before 3.3; 3.10.105 to before 3.11; 3.12.68 to before 3.13; 3.16.42 to before 3.17; 4.4.34 to before 4.5; 4.8.10 to before 4.9 Fixed in 3.3, 3.11, 3.13, 3.17, 4.5, 4.9 Patch available CNA
- Linux VendorLinux Affected 4.9 and later Fixed in 4.14.326, 4.19.295, 5.4.257, 5.10.195, 5.15.132, 6.1.53, 6.4.16, 6.5.3, 6.6 Patch available CNA
Remediation
- Fix · CNA Linux (Linux) Fixed in 3.3, 3.11, 3.13, 3.17, 4.5, 4.9
- Fix · CNA Linux (Linux) Fixed in 4.14.326, 4.19.295, 5.4.257, 5.10.195, 5.15.132, 6.1.53, 6.4.16, 6.5.3, 6.6
Vendor assessments
Red Hat
Not affected: 5 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2023-53782
- 2026-10-03 Alias added: GHSA-6mgp-6842-9x3v
References
Other 9
- https://git.kernel.org/stable/c/3533e10272555c422a7d51ebc0ce8c483429f7f2
- https://git.kernel.org/stable/c/177212bf6dc1ff2d13d0409cddc5c9e81feec63d
- https://git.kernel.org/stable/c/7a7dd70cb954d3efa706a429687ded88c02496fa
- https://git.kernel.org/stable/c/4b8a938e329ae4eb54b73b0c87b5170607b038a8
- https://git.kernel.org/stable/c/6ecf09699eb1554299aa1e7fd13e9e80f656c2f9
- https://git.kernel.org/stable/c/f8a7f10a1dccf9868ff09342a73dce27501b86df
- https://git.kernel.org/stable/c/d8171411a661253e6271fa10b65b46daf1b6471c
- https://git.kernel.org/stable/c/ec620c34f5fa5d055f9f6136a387755db6157712
- https://git.kernel.org/stable/c/977ad86c2a1bcaf58f01ab98df5cc145083c489c
More Linux vulnerabilities
- TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
- TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
- TI-2021-02452 Incorrect authorization in Ubuntu linux kernel KEVCVSS 3.1HIGH 8.8
- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
Sources
- CVE-2023-53782 · CVE Program
- CVE-2023-53782 · NVD
- FIRST EPSS
- GHSA-6mgp-6842-9x3v · GitHub Advisory Database · CC BY 4.0
- CVE-2023-53782 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences