Description
The coda_pioctl function in the coda functionality (pioctl.c) for Linux kernel 2.6.9 and 2.4.x before 2.4.29 may allow local users to cause a denial of service (crash) or execute arbitrary code via negative vi.in_size or vi.out_size values, which may trigger 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.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 3.1 | kernel-source-2.6.8 | 2.6.8-16sarge2 | DSA-1017-1 |
| Debian 3.0 | kernel-image-sparc-2.4 | 26woody1 | DSA-1070-1 |
| Debian 3.0 | kernel-patch-2.4.19-mips | 2.4.19-0.020911.1.woody5 | DSA-1070-1 |
| Debian 3.0 | kernel-source-2.4.16 | 2.4.16-1woody2 | DSA-1067-1 |
| Debian 3.0 | kernel-source-2.4.17 | 2.4.17-1woody4 | DSA-1082-1 |
| Debian 3.0 | kernel-source-2.4.18 | 2.4.18-14.4 | DSA-1069-1 |
| Debian 3.0 | kernel-source-2.4.19 | 2.4.19-4.woody3 | DSA-1070-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 3 | kernel +8 | 2.4.21-37.EL | RHSA-2005:663 |
Advisories 6
- RHSA-2005:663 Red Hat Security Advisory: Updated kernel packages available for Red Hat Enterprise Linux 3 Update 6 Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-1082-1 kernel-source-2.4.17 - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-1067-1 kernel-source-2.4.16 - several Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-1017-1 kernel-source-2.6.8 - several Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-1069-1 kernel-source-2.4.18 - several Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-1070-1 kernel-source-2.4.19 - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
References
- 20163 third-party-advisory
- 18684 third-party-advisory
- [linux-kernel] 20050105 Re: [Coverity] Untrusted user data in kernel mailing-list
- DSA-1082 vendor-advisory
- [linux-kernel] 20041216 [Coverity] Untrusted user data in kernel mailing-list
- DSA-1070 vendor-advisory
- 14967 vdb-entry
- 1013018 vdb-entry
- FLSA:157459-1 vendor-advisory
- [linux-kernel] 20050107 [PATCH 2.4.29-pre3-bk4] fs/coda Re: [Coverity] Untrusted user data in kernel mailing-list
- DSA-1067 vendor-advisory
- DSA-1069 vendor-advisory
- 17002 third-party-advisory
- [linux-kernel] 20050107 [PATCH 2.6.10-mm2] fs/coda Re: [Coverity] Untrusted user data in kernel mailing-list
- RHSA-2005:663 vendor-advisory
- DSA-1017 vendor-advisory
- ADV-2005-1878 vdb-entry
- 20202 third-party-advisory
- oval:org.mitre.oval:def:11690 vdb-entry signature
- 19374 third-party-advisory
- RHSA-2006:0191 vendor-advisory
- 20338 third-party-advisory