6.5
Medium
CVE-2026-120831 Libslirp: libslirp: queue pointer corruption in if_output() leading to denial of service
Description
A flaw was found in libslirp in if_output(). When moving a session from the fast queue to the batch queue, the code unlinked and reinserted an arbitrary packet via ifm->m_nextpkt instead of the session queue head, corrupting queue pointers. A guest generating burst traffic could crash the host networking process, causing a denial of service.
CVSS 3.1 detail
Vector CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitable from the adjacent network, without an account and without any user action; an attacker can seriously compromise confidentiality, integrity or availability.
- Attack vector
- Adjacent network
- Attack complexity
- Low
- Privileges required
- None
- Interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10 | Versions not published | |
| Red Hat Enterprise Linux 8 | Versions not published | |
| Red Hat Enterprise Linux 9 | Versions not published | |
| Red Hat OpenShift Container Platform 4 | Versions not published | |
| Red Hat OpenShift Container Platform 5 | Versions not published |
References
- access.redhat.com access.redhat.com
- RHBZ#2565425 bugzilla.redhat.com
- gitlab.freedesktop.org gitlab.freedesktop.org
Timeline
- Published
- Last modified
Other CVEs of Red Hat Enterprise Linux 10
The 1454 CVEs of Red Hat Enterprise Linux 10 →
CVE-2026-123151
Gdb: gdb: stack buffer overflow in parse_tsv_definition via stale rs->buf tail
Not rated
CVE-2026-121997
Gdb: gdbserver: heap buffer overflow in cmd_qtdpsrc via qtdpsrc declared/actual length mismatch
8.1
High
CVE-2026-121996
Gdb: gdbserver: heap disclosure and wild pointer in gdb_parse_agent_expr via untrusted agent-expression length
8.2
High
CVE-2026-121995
Gdb: gdb: stack buffer overflow in parse_tracepoint_definition via stale rs->buf tail
7.5
High