Description
Integer overflow in the ubsec_keysetup function for Linux Broadcom 5820 cryptonet driver allows local users to cause a denial of service (crash) and possibly execute arbitrary code via a negative add_dsa_buf_bytes variable, which leads to a buffer overflow.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 3 | kernel +8 | 2.4.21-20.0.1.EL | RHSA-2004:549 |
Advisories 1
- RHSA-2004:549 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
References
- 20040623 Linux Broadcom 5820 Cryptonet Driver Integer Overflow mailing-list
- RHSA-2005:283 vendor-advisory
- RHSA-2004:549 vendor-advisory
- P-047 third-party-advisory government-resource
- 10599 vdb-entry
- oval:org.mitre.oval:def:9773 vdb-entry signature
- 11936 third-party-advisory
- bcm5820-adddsabufbytes-integer-bo(16459) vdb-entry