Description
Multiple vulnerabilities in the samba filesystem (smbfs) in Linux kernel 2.4 and 2.6 allow remote samba servers to cause a denial of service (crash) or gain sensitive information from kernel memory via a samba server (1) returning more data than requested to the smb_proc_read function, (2) returning a data offset from outside the samba packet to the smb_proc_readX function, (3) sending a certain TRANS2 fragmented packet to the smb_receive_trans2 function, (4) sending a samba packet with a certain header size to the smb_proc_readX_data function, or (5) sending a certain packet based offset for the data in a packet to the smb_receive_trans2 function.
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 3.0 | 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 | 2.4.21-20.0.1.EL | RHSA-2004:549 |
Advisories 5
- RHSA-2004:549 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 29, 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-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
- 11695 vdb-entry
- DSA-1082 vendor-advisory
- MDKSA-2005:022 vendor-advisory
- 20041117 Advisory 14/2004: Linux 2.x smbfs multiple remote vulnerabilities mailing-list
- FLSA:2336 vendor-advisory
- oval:org.mitre.oval:def:10330 vdb-entry signature
- linux-smbreceivetrans2-dos(18136) vdb-entry
- http://security.e-matters.de/advisories/142004.html
- DSA-1070 vendor-advisory
- RHSA-2004:537 vendor-advisory
- 20162 third-party-advisory
- VU#726198 third-party-advisory
- DSA-1067 vendor-advisory
- DSA-1069 vendor-advisory
- linux-smbprocreadxdata-dos(18135) vdb-entry
- RHSA-2004:505 vendor-advisory
- linux-smb-response-dos(18134) vdb-entry
- 20202 third-party-advisory
- RHSA-2004:504 vendor-advisory
- 20041118 [USN-30-1] Linux kernel vulnerabilities mailing-list
- 13232 third-party-advisory
- 20338 third-party-advisory