CVE catalog

CVE-2026-111137

libsmi: CVE-2026-111137

Severity: Medium · CVSS 6.9CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published: Oct 15, 2026, 6:57:30 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.13% · Oct 25, 2026

libsmi through 0.5.0 contains an out-of-bounds write vulnerability in smiValueAsString() in lib/smi.c that allows attackers to overflow a fixed 1024-byte static buffer through hex rendering of OCTET STRING values. Attackers can supply a crafted MIB with an OCTET STRING DEFVAL of 512 or more octets and a leading 0x00 byte to corrupt adjacent library globals and crash smidump or other consumers.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	libsmi	sid	`0.4.8+dfsg2-18`	unknown
Debian	libsmi	forky	`0.4.8+dfsg2-18`	unknown
Debian	libsmi	trixie	`0.4.8+dfsg2-17`	unknown
Debian	libsmi	bookworm	`0.4.8+dfsg2-16`	unknown

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	libsmi	source	sid	`(unfixed)`	not yet assigned	Not reported	Not reported
Debian	libsmi	source	forky	`(unfixed)`	not yet assigned	Not reported	Not reported
Debian	libsmi	source	trixie	`(unfixed)`	not yet assigned	Not reported	Not reported
Debian	libsmi	source	bookworm	`(unfixed)`	not yet assigned	Not reported	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libsmi2-common]Affected
Source package: [libsmi]
Details (2)
- 0.4.8+dfsg2-16 · all · bookworm
  Affected
  dsa · libsmi · debian · bookworm; dsa · libsmi · debian · 12
- 0.4.8+dfsg2-16 · all · bookworm
  Affected
  dsa · libsmi · debian · bookworm; dsa · libsmi · debian · 12
[libsmi2-dev]Affected
Source package: [libsmi]
Details (2)
- 0.4.8+dfsg2-16 · amd64 · bookworm
  Affected
  dsa · libsmi · debian · bookworm; dsa · libsmi · debian · 12
- 0.4.8+dfsg2-16 · arm64 · bookworm
  Affected
  dsa · libsmi · debian · bookworm; dsa · libsmi · debian · 12
[libsmi2ldbl]Affected
Source package: [libsmi]
Details (2)
- 0.4.8+dfsg2-16 · amd64 · bookworm
  Affected
  dsa · libsmi · debian · bookworm; dsa · libsmi · debian · 12
- 0.4.8+dfsg2-16 · arm64 · bookworm
  Affected
  dsa · libsmi · debian · bookworm; dsa · libsmi · debian · 12
[smistrip]Affected
Source package: [libsmi]
Details (2)
- 0.4.8+dfsg2-16 · all · bookworm
  Affected
  dsa · libsmi · debian · bookworm; dsa · libsmi · debian · 12
- 0.4.8+dfsg2-16 · all · bookworm
  Affected
  dsa · libsmi · debian · bookworm; dsa · libsmi · debian · 12
[smitools]Affected
Source package: [libsmi]
Details (2)
- 0.4.8+dfsg2-16 · amd64 · bookworm
  Affected
  dsa · libsmi · debian · bookworm; dsa · libsmi · debian · 12
- 0.4.8+dfsg2-16 · arm64 · bookworm
  Affected
  dsa · libsmi · debian · bookworm; dsa · libsmi · debian · 12

[Debian 13 (Trixie)]

[libsmi2-common]Affected
Source package: [libsmi]
Details (2)
- 0.4.8+dfsg2-17 · all · trixie
  Affected
  dsa · libsmi · debian · 13
- 0.4.8+dfsg2-17 · all · trixie
  Affected
  dsa · libsmi · debian · 13
[libsmi2-dev]Affected
Source package: [libsmi]
Details (2)
- 0.4.8+dfsg2-17+b1 · amd64 · trixie
  Affected
  dsa · libsmi · debian · 13
- 0.4.8+dfsg2-17+b1 · arm64 · trixie
  Affected
  dsa · libsmi · debian · 13
[libsmi2t64]Affected
Source package: [libsmi]
Details (2)
- 0.4.8+dfsg2-17+b1 · amd64 · trixie
  Affected
  dsa · libsmi · debian · 13
- 0.4.8+dfsg2-17+b1 · arm64 · trixie
  Affected
  dsa · libsmi · debian · 13
[smistrip]Affected
Source package: [libsmi]
Details (2)
- 0.4.8+dfsg2-17 · all · trixie
  Affected
  dsa · libsmi · debian · 13
- 0.4.8+dfsg2-17 · all · trixie
  Affected
  dsa · libsmi · debian · 13
[smitools]Affected
Source package: [libsmi]
Details (2)
- 0.4.8+dfsg2-17+b1 · amd64 · trixie
  Affected
  dsa · libsmi · debian · 13
- 0.4.8+dfsg2-17+b1 · arm64 · trixie
  Affected
  dsa · libsmi · debian · 13

Observed: Oct 24, 2026, 10:16:26 AM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]