CVE Intelligence
High Memory corruption

CVE-2022-3534 — Linux Kernel libbpf btf_dump.c btf_dump_name_dups use after free

A vulnerability has been found in Linux Kernel up to 5.10.162/5.15.85/6.0.15/6.1.1. The impacted element is the function btf_dump_name_dups of the file tools/lib/bpf/btf_dump.c of the component libbpf. The manipulation leads to use after free. Upgrading to version 5.10.163, 5.15.86, 6.0.16, 6.1.2 and 6.2 is sufficient to resolve this issue. The identifier of the patch is c61650b869e0b6fb0c0a28ed42d928eea969afc8/fbe08093fb2334549859829ef81d42570812597d/8c64a8e76eb85d422af5ec60ccbf26e3ead8c333/a733bf10198eb5bb927890940de8ab457491ed3b/93c660ca40b5d2f7c1b1626e955a8e9fa30e0749. You should upgrade the affected component.

Published Oct 17, 2022 · Updated Oct 14, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP, GitHub Security Advisories · CNA: VulDB

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.
How the score was calculated
  • EPSS 0.9% (30-day exploitation probability)+9
  • Technical severity (high)+6

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation
Not confirmed
Not in CISA KEV — an absence of record, not proof it is unexploited.
EPSS FIRST
0.94%
ahead of 60% of scored CVEs · Oct 14, 2026
Affects
Debian
Debian Linux and 1 more
CVSS base
8.0
High · 4 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation
None
none · proof-of-concept · active
Automatable
No
can an attacker script the kill-chain steps
Technical impact
Partial
partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

  • Documented patch — git.kernel.org (NIST National Vulnerability Database)

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

  1. Identify exposed assets running the affected vendor/product/version combinations (Debian Debian Linux, Linux Linux Kernel).
  2. Apply the fixed version or the patch documented under Remediation.
  3. Search available logs for exploit probes matching the vulnerability class (memory corruption), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

VendorProductVersionsStatusSource
Debian Debian Linux version 11.0 Vulnerable NIST National Vulnerability Database
Linux Linux Kernel ≥ 5.10 and < 5.10.163≥ 5.11 and < 5.15.86≥ 5.16 and < 6.0.16≥ 6.1 and < 6.1.2 Vulnerable NIST National Vulnerability Database
Linux Linux Kernel version 5.10.162version 5.15.0version 5.15.1version 5.15.2version 5.15.3version 5.15.4version 5.15.5version 5.15.6
and 97 more version 5.15.7version 5.15.8version 5.15.9version 5.15.10version 5.15.11version 5.15.12version 5.15.13version 5.15.14version 5.15.15version 5.15.16version 5.15.17version 5.15.18version 5.15.19version 5.15.20version 5.15.21version 5.15.22version 5.15.23version 5.15.24version 5.15.25version 5.15.26version 5.15.27version 5.15.28version 5.15.29version 5.15.30version 5.15.31version 5.15.32version 5.15.33version 5.15.34version 5.15.35version 5.15.36version 5.15.37version 5.15.38version 5.15.39version 5.15.40version 5.15.41version 5.15.42version 5.15.43version 5.15.44version 5.15.45version 5.15.46version 5.15.47version 5.15.48version 5.15.49version 5.15.50version 5.15.51version 5.15.52version 5.15.53version 5.15.54version 5.15.55version 5.15.56version 5.15.57version 5.15.58version 5.15.59version 5.15.60version 5.15.61version 5.15.62version 5.15.63version 5.15.64version 5.15.65version 5.15.66version 5.15.67version 5.15.68version 5.15.69version 5.15.70version 5.15.71version 5.15.72version 5.15.73version 5.15.74version 5.15.75version 5.15.76version 5.15.77version 5.15.78version 5.15.79version 5.15.80version 5.15.81version 5.15.82version 5.15.83version 5.15.84version 5.15.85version 6.0.0version 6.0.1version 6.0.2version 6.0.3version 6.0.4version 6.0.5version 6.0.6version 6.0.7version 6.0.8version 6.0.9version 6.0.10version 6.0.11version 6.0.12version 6.0.13version 6.0.14version 6.0.15version 6.1.0version 6.1.1
Vulnerable CVE Program (cve.org) e CISA ADP

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector
Adjacent
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

ScoreVersionSeverityExpl.ImpactScored by
5.1 CVSS 4.0 Medium — — cna@vuldb.com via NIST National Vulnerability Database
5.1 CVSS 4.0 Medium — — VulDB via CVE Program (cve.org) e CISA ADP
8.0 CVSS 3.1 High 2.1 5.9 nvd@nist.gov via NIST National Vulnerability Database
8.0 CVSS 3.1 High — — GitHub, Inc. via GitHub Security Advisories
5.5 CVSS 3.1 Medium 2.1 3.4 cna@vuldb.com via NIST National Vulnerability Database
5.5 CVSS 3.1 Medium — — VulDB via CVE Program (cve.org) e CISA ADP
5.5 CVSS 3.0 Medium — — VulDB via CVE Program (cve.org) e CISA ADP
4.9 CVSS 2.0 Medium 4.4 6.4 cna@vuldb.com via NIST National Vulnerability Database
4.9 CVSS 2.0 Medium — — VulDB via CVE Program (cve.org) e CISA ADP
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H (score shown at the top: nvd@nist.gov)
Scoring entities (NIST, CNA, ADP) score independently; each score is shown with its origin. For prioritization we use 8.0 (NVD (NIST)) as a conservative provisional reference — not a definitive official score.

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-119 · Buffer Errors (Improper Restriction of Operations within Memory Bounds)

Other CVEs with this weakness →

EPSS over time FIRST

Oct 13, 2026 → Oct 14, 2026 · 2 reading(s) · max 0.94%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

  • Correlate service crashes/restarts with inbound traffic; repeated crashes may indicate attempts.
endpoint telemetry (EDR)crash dumps

Timeline

What happened to this CVE, newest first.

  • 2026
  • Affected products added · linux/kernel
    Oct 14, 2026 · CVE Program (cve.org) e CISA ADP
  • SSVC assessment updated
    Oct 14, 2026 · CVE Program (cve.org) e CISA ADP
  • Record published
    Oct 14, 2026
  • Fix documented
    Oct 14, 2026 · NIST National Vulnerability Database
  • Affected products added · debian/debian linux, linux/linux kernel
    Oct 14, 2026 · NIST National Vulnerability Database
  • CVSS changed · 8.0
    Oct 14, 2026 · NIST National Vulnerability Database
  • Source status changed · → Modified
    Oct 14, 2026 · NIST National Vulnerability Database
  • Record created in this database
    Oct 14, 2026 · Alertas do Telegram
  • 2022
  • CVE published
    Oct 17, 2022 · VulDB

Source activity

Repeated readings are counted rather than listed.

  • 2× References added · Oct 14, 2026 – Oct 14, 2026
  • 1× Official description updated · Oct 14, 2026 – Oct 14, 2026

References

11 on the record

Elsewhere on this site

Debian
every CVE for this vendor
Memory corruption
same class
CWE-119
other pages naming this weakness

Related CVEs (same products)

  • CVE-2026-98164 KVM: x86/mmu: Check write tracking in all address spaces 16d
  • CVE-2026-98163 cgroup: Avoid iteration of dying tasks with zero refcount 19d
  • CVE-2026-98162 smb/server: fix tree connection leak in smb2_tree_connect() 20d
  • CVE-2026-98156 drm/virtio: use the DMA API for resource backing on Xen 20d
  • CVE-2026-98159 wifi: mt76: mt7921: validate CLC firmware records 20d
  • CVE-2026-98136 ntfs: bound $AttrDef table walk to the loaded table size 20d

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

  • No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
  • No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
  • No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2022-3534 is "Linux Kernel libbpf btf_dump.c btf_dump_name_dups use after free", rated High. It affects Debian Linux (Debian); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 8.0 describes technical severity. EPSS 0.94% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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