Description
The SMB parser in tcpdump before 4.9.3 has buffer over-reads in print-smb.c:print_trans() for \MAILSLOT\BROWSE and \PIPE\LANMAN.
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 14 | tcpdump | 4.9.3-1 | — |
| Debian 13 | tcpdump | 4.9.3-1 | — |
| Debian 12 | tcpdump | 4.9.3-1 | — |
| Debian 10 | tcpdump | 4.9.3-1~deb10u1 | DSA-4547-1 |
| Debian 9 | tcpdump | 4.9.3-1~deb9u1 | DSA-4547-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 8 | tcpdump | 4.9.3-1~deb8u1 | DLA-1955-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | tcpdump | 4.9.3-0ubuntu0.18.04.1 | USN-4252-1 |
| Ubuntu 16.04 LTS | tcpdump | 4.9.3-0ubuntu0.16.04.1 | USN-4252-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 14.04 LTS | tcpdump | 4.9.3-0ubuntu0.14.04.1+esm1 | USN-4252-2 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | tcpdump | 14:4.9.3-1.el8 | RHSA-2020:4760 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | tcpdump | 4:4.9.3-1.el8 | RLSA-2020:4760 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP1 | tcpdump | 4.9.2-3.9.1 | SUSE-SU-2019:2674-1 |
| SLES 15 | tcpdump | 4.9.2-3.9.1 | SUSE-SU-2019:2674-1 |
| SLES 12 SP5 | tcpdump | 4.9.2-14.17.1 | SUSE-SU-2020:3360-1 |
| SLES 11 SP4 | tcpdump | 3.9.8-1.30.13.1 | SUSE-SU-2019:14191-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP5 | tcpdump | 4.9.2-14.17.1 | SUSE-SU-2020:3360-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | tcpdump | 3.9.8-1.30.13.1 | SUSE-SU-2019:14191-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | tcpdump | 4.99.1-1.2 | openSUSE-SU-2024:11425-1 |
| openSUSE Leap 15.1 | tcpdump | 4.9.2-lp151.4.6.1 | openSUSE-SU-2019:2348-1 |
| openSUSE Leap 15.0 | tcpdump | 4.9.2-lp150.10.1 | openSUSE-SU-2019:2344-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | tcpdump | 4.9.3-r0 | — |
| Alpine v3.23 | tcpdump | 4.9.3-r0 | — |
| Alpine v3.22 | tcpdump | 4.9.3-r0 | — |
| Alpine v3.21 | tcpdump | 4.9.3-r0 | — |
| Alpine v3.20 | tcpdump | 4.9.3-r0 | — |
Show 11 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | tcpdump | 4.9.3-r0 | — |
| Alpine v3.18 | tcpdump | 4.9.3-r0 | — |
| Alpine v3.17 | tcpdump | 4.9.3-r0 | — |
| Alpine v3.16 | tcpdump | 4.9.3-r0 | — |
| Alpine v3.15 | tcpdump | 4.9.3-r0 | — |
| Alpine v3.14 | tcpdump | 4.9.3-r0 | — |
| Alpine v3.13 | tcpdump | 4.9.3-r0 | — |
| Alpine v3.12 | tcpdump | 4.9.3-r0 | — |
| Alpine v3.11 | tcpdump | 4.9.3-r0 | — |
| Alpine v3.10 | tcpdump | 4.9.3-r0 | — |
| Alpine v3.9 | tcpdump | 4.9.3-r0 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | tcpdump | 14:4.9.3-1.el8 | ELSA-2020-4760 |
Advisories 13
- DSA-4547-1 tcpdump - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1955-1 tcpdump - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-4252-1 tcpdump vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-4252-2 tcpdump vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- RLSA-2020:4760 Moderate: tcpdump security, bug fix, and enhancement update Rocky Linux Security Advisories · Feb 5, 2026
- SUSE-SU-2020:3360-1 Security update for tcpdump SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:14191-1 Security update for tcpdump SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11425-1 tcpdump-4.99.1-1.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:2348-1 Security update for tcpdump SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:2674-1 Security update for tcpdump SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:2344-1 Security update for tcpdump SUSE / openSUSE Security Updates · Feb 4, 2026
- RHSA-2020:4760 Red Hat Security Advisory: tcpdump security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jan 14, 2026
- ELSA-2020-4760 Moderate: tcpdump security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Nov 10, 2020
References
- https://github.com/the-tcpdump-group/tcpdump/blob/tcpdump-4.9/CHANGES
- https://github.com/the-tcpdump-group/tcpdump/commit/96480ab95308cd9234b4f09b175ebf60e17792c6
- [debian-lts-announce] 20191011 [SECURITY] [DLA 1955-1] tcpdump security update mailing-list
- openSUSE-SU-2019:2344 vendor-advisory
- openSUSE-SU-2019:2348 vendor-advisory
- 20191021 [SECURITY] [DSA 4547-1] tcpdump security update mailing-list
- DSA-4547 vendor-advisory
- FEDORA-2019-85d92df70f vendor-advisory
- FEDORA-2019-d06bc63433 vendor-advisory
- FEDORA-2019-6db0d5b9d9 vendor-advisory
- https://support.apple.com/kb/HT210788
- 20191211 APPLE-SA-2019-12-10-3 macOS Catalina 10.15.2, Security Update 2019-002 Mojave, Security Update 2019-007 High Sierra mailing-list
- 20191213 APPLE-SA-2019-12-10-3 macOS Catalina 10.15.2, Security Update 2019-002 Mojave, Security Update 2019-007 High Sierra mailing-list
- https://security.netapp.com/advisory/ntap-20200120-0001/
- USN-4252-2 vendor-advisory
- USN-4252-1 vendor-advisory