VulnerabilityPublished 18 Oct 2026

CVE-2026-98579: Linux kernel · nfc: llcp: fix sdreq TLV list leak on parse/alloc/send failure

Source GCVE Database

Authoritative record:CVE-2026-98579· Low

Not known to be exploited · fixed in e43ec0191c1630f41e7043ac729ea6f1b8044a7f : update Linux kernel when convenient.

Data as of 26 Oct 2026, 14:05 UTC

Severity

Low

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.2% chance of exploitation in 30 days – higher than 11% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in e43ec0191c1630f41e7043ac729ea6f1b8044a7f, d3f60a7fc291d08cd9192a3b4cd5d3a223fa7d02, cbde7f5d326172d6dbb55cca0df42fa7e1ed8115 +5

Exploitation evidence

Disclosed: evidence found.
CVE published 18 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

ghsa-g53r-f4w7-7x66

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ d9b8d8e19b073096d3609bbd60f82148d128b555, < e43ec0191c1630f41e7043ac729ea6f1b8044a7f	Fixed in e43ec0191c1630f41e7043ac729ea6f1b8044a7f
LinuxLinux	Affected ≥ d9b8d8e19b073096d3609bbd60f82148d128b555, < d3f60a7fc291d08cd9192a3b4cd5d3a223fa7d02	Fixed in d3f60a7fc291d08cd9192a3b4cd5d3a223fa7d02
LinuxLinux	Affected ≥ d9b8d8e19b073096d3609bbd60f82148d128b555, < cbde7f5d326172d6dbb55cca0df42fa7e1ed8115	Fixed in cbde7f5d326172d6dbb55cca0df42fa7e1ed8115
LinuxLinux	Affected ≥ d9b8d8e19b073096d3609bbd60f82148d128b555, < 755bfc409748d8f3df64eb0eb26926270de3dd77	Fixed in 755bfc409748d8f3df64eb0eb26926270de3dd77
LinuxLinux	Affected ≥ d9b8d8e19b073096d3609bbd60f82148d128b555, < 66f4300206b82b0b143ef0d9be90cd8d29f23a47	Fixed in 66f4300206b82b0b143ef0d9be90cd8d29f23a47
LinuxLinux	Affected ≥ d9b8d8e19b073096d3609bbd60f82148d128b555, < 08d2c069239ab425fdd333784a6a3b3e034e4aa0	Fixed in 08d2c069239ab425fdd333784a6a3b3e034e4aa0

AI-suggested

A fix has been applied to the Linux kernel to properly free allocated TLV nodes on error paths in the NFC LLCP code. Users should update to the fixed kernel version once available. No additional mitigation is required as the issue is resolved in the kernel source.

Description

A memory leak vulnerability in the Linux kernel's NFC LLCP component was fixed. The issue involved failure to free allocated TLV nodes on certain error paths during nested netlink attribute parsing and sending. This could lead to resource leakage but does not affect normal operation paths.

References

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