OOBR and OOBW in libpcap before 1.10.7
Priority LOW 36CWE-125Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · High · High
- Fix status
- Partial Red Hat: 8 fixed, 4 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.
Summary
In BPF instructions that load/store a value from/to a scratch memory register the register index is an unsigned 32-bit integer and must not exceed 15, but libpcap BPF interpreter does not validate the value. In particular uncommon use cases a crafted filter program can cause the interpreter to try reading and writing the OS process memory in the 16GiB starting at the current stack frame on 64-bit architectures and in the entire address space on 32-bit architectures.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00108 1st percentileScored 2026-11-07
Fix Partial libpcap (The Tcpdump Group): 1.10.7Red Hat: 5 advisoriesRed Hat: 8 fixed, 4 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| The Tcpdump Group | libpcap | before 1.10.7 | 1.10.7 | Patch available | CNA |
- libpcap VendorThe Tcpdump Group Affected before 1.10.7 Fixed in 1.10.7 Patch available CNA
Remediation
- Fix · CNA libpcap (The Tcpdump Group) Fixed in 1.10.7
Red Hat 5 advisories
- RHSA-2026:89197 Released 2026-10-27 · Red Hat rating CriticalOpenShift Container Platform 4.22.20 bug fix and security update
- Red Hat OpenShift Container Platform 4.22 rhcos-aarch64-4.22.9.8.202610241758-0, rhcos-ppc64le-4.22.9.8.202610241758-0, rhcos-s390x-4.22.9.8.202610241758-0 +1
- RHSA-2026:82939 Released 2026-10-14 · Red Hat rating ImportantRed Hat Update Infrastructure 5.3 security update
- Red Hat Update Infrastructure 5 registry.redhat.io/rhui5/cds-kubernetes-rhel9, registry.redhat.io/rhui5/cds-rhel9, registry.redhat.io/rhui5/haproxy-rhel9 +2
- RHSA-2026:76045 Released 2026-10-05 · Red Hat rating Importantlibpcap security update
- Red Hat Enterprise Linux BaseOS (v. 8) libpcap-14:1.9.1-6.el8_10
- Red Hat Enterprise Linux CRB (v. 8) libpcap-devel-14:1.9.1-6.el8_10
Show 2 more Red Hat advisories
- RHSA-2026:74441 Released 2026-10-01 · Red Hat rating Importantlibpcap security update
- Red Hat Enterprise Linux BaseOS (v. 9) libpcap-14:1.10.0-4.el9_8.1
- Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) libpcap-devel-14:1.10.0-4.el9_8.1
- RHSA-2026:74442 Released 2026-10-01 · Red Hat rating Importantlibpcap security update
- Red Hat Enterprise Linux BaseOS (v. 10) libpcap-14:1.10.4-7.el10_2.1
- Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) libpcap-devel-14:1.10.4-7.el10_2.1
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
The Tcpdump Group libpcap 1.10.7
7 records Highest priority Priority LOW 7 LOW
Other records, highest priority first
- TI-2026-05744 infinte loop in libpcap before 1.10.7Priority LOW 33
- TI-2026-24461 OOBR in libpcap before 1.10.7Priority LOW 24
- TI-2026-24460 abort() in libpcap before 1.10.7 on an invalid BPF opcodePriority LOW 24
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix yet |
| Red Hat Enterprise Linux 7 | Affected | No fix yet |
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet |
| Red Hat OpenShift Container Platform 5 | Affected | No fix yet |
| Red Hat Enterprise Linux BaseOS (v. 10) | Fixed | RHSA-2026:74442 |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2026:76045 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2026:74441 |
| Red Hat Enterprise Linux CRB (v. 8) | Fixed | RHSA-2026:76045 |
| Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) | Fixed | RHSA-2026:74442 |
| Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) | Fixed | RHSA-2026:74441 |
| Red Hat OpenShift Container Platform 4.22 | Fixed | RHSA-2026:89197 |
| Red Hat Update Infrastructure 5 | Fixed | RHSA-2026:82939 |
Not affected: 1 product
- Red Hat Update Infrastructure 5
Timeline
- 2026-10-02 Threatist record created from CVE-2026-0799
- 2026-10-03 Alias added: GHSA-w3r6-8g24-54m5
- 2026-10-06 Fix available: RHSA-2026:76045 · Red Hat
- 2026-10-06 Fix available: Red Hat Enterprise Linux BaseOS (v. 8), Red Hat Enterprise Linux CRB (v. 8) · Red Hat
- 2026-10-16 Fix available: RHSA-2026:82939 · Red Hat
- 2026-10-16 Fix available: Red Hat Update Infrastructure 5 · Red Hat
- 2026-10-28 Fix available: Red Hat OpenShift Container Platform 4.22 · Red Hat
- 2026-10-29 Fix available: RHSA-2026:89197 · Red Hat
- 2026-10-30 Affected versions changed · Red Hat
References
More The Tcpdump Group vulnerabilities
- TI-2007-03684 Integer overflow in print-bgp.c in the BGP dissector in tcpdump 3.9.6 and earlier allows… CVSS 3.1CRITICAL 9.8
- TI-2004-00159 Integer underflow in the isakmp_id_print for TCPDUMP 3.8.1 and earlier allows remote… CVSS 2.0MEDIUM 5.0
- TI-2018-10700 The BGP parser in tcpdump before 4.9.3 has a buffer over-read in… CVSS 3.1CRITICAL 9.8
- TI-2017-09693 The RPKI-Router parser in tcpdump before 4.9.2 has a buffer over-read in print-rpki-rtr.c:rpki_rtr_pdu_print(). CVSS 3.1CRITICAL 9.8
- TI-2017-09684 The ICMPv6 parser in tcpdump before 4.9.2 has a buffer over-read in print-icmp6.c:icmp6_nodeinfo_print(). CVSS 3.1CRITICAL 9.8
- TI-2017-09683 The MPTCP parser in tcpdump before 4.9.2 has a buffer over-read in print-mptcp.c, several functions. CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-0799 · CVE Program
- CVE-2026-0799 · NVD
- FIRST EPSS
- GHSA-w3r6-8g24-54m5 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-0799 · 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