- —Not scoredno CVSS score yet
- 0.21%Exploitation in 30 daysEPSS · top 89% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: nfc: llcp: drop truncated I/RR/RNR PDUs in nfc_llcp_recv_hdlc() nfc_llcp_recv_hdlc() reads the sequence byte skb->data[2], via nfc_llcp_ns()/nfc_llcp_nr(), before any length check. The receive path only guarantees the two-byte LLCP header -- __nfc_llcp_recv() checks it with pskb_may_pull() and nfc_llcp_recv_agf() admits two-byte inner PDUs -- so a two-byte I, RR or RNR PDU reads one byte of uninitialised skb tailroom. The byte becomes N(R)/N(S); a peer can already set those with a well-formed PDU, so this is acting on uninitialised memory, not new peer control. Guard the read with pskb_may_pull(), as commit 95674f506c63 ("nfc: llcp: reject PDUs shorter than the LLCP header") did for the two-byte header, so the sequence byte is present and linear before it is read. RR and RNR PDUs are LLCP_HEADER_SIZE + LLCP_SEQUENCE_SIZE bytes and an I PDU is longer, so no valid frame is rejected; a truncated PDU is malformed, so return without a DM reply.
Timeline
ID reserved
By Linux
- 23 days later
· 23 days later
Published
- 1 day later
· 1 day later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.21% · top 89% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected d646960f7986fefb460a2b062d5ccc8ccfeacc3a – < 3afdbebfee2ef7e9510880868cfb482cbffe6836
- affected d646960f7986fefb460a2b062d5ccc8ccfeacc3a – < 9b4086eb67a9a3b1ce69fef1b6793827363703ce
- affected d646960f7986fefb460a2b062d5ccc8ccfeacc3a – < 51b6d73373589abb9de4d84767b0db1bc8d395d9
- affected d646960f7986fefb460a2b062d5ccc8ccfeacc3a – < 066205553a0106565bcede934f5721c25ebd6e4e
- affected d646960f7986fefb460a2b062d5ccc8ccfeacc3a – < 18f60ee882403d5b48097f5f6ae45f794e4cc643
- affected d646960f7986fefb460a2b062d5ccc8ccfeacc3a – < 810f204ef8f61f0c930cf6b3280050b3ee6a8ae7
- affected d646960f7986fefb460a2b062d5ccc8ccfeacc3a – < 744e61bd06188d8bb068c26a461c252f242b05c9
- affected d646960f7986fefb460a2b062d5ccc8ccfeacc3a – < 273f9d667cde649f8de9d72b1303cc2f4b658c50
- affected 3.3
- unaffected < 3.3
- unaffected 5.10.271 – ≤ 5.10.*
- unaffected 5.15.222 – ≤ 5.15.*
- unaffected 6.1.189 – ≤ 6.1.*
- unaffected 6.6.158 – ≤ 6.6.*
- unaffected 6.12.112 – ≤ 6.12.*
- unaffected 6.18.55 – ≤ 6.18.*
- unaffected 7.2.9 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References8
- https://git.kernel.org/stable/c/3afdbebfee2ef7e9510880868cfb482cbffe6836 (opens in a new tab)
- https://git.kernel.org/stable/c/9b4086eb67a9a3b1ce69fef1b6793827363703ce (opens in a new tab)
- https://git.kernel.org/stable/c/51b6d73373589abb9de4d84767b0db1bc8d395d9 (opens in a new tab)
- https://git.kernel.org/stable/c/066205553a0106565bcede934f5721c25ebd6e4e (opens in a new tab)
- https://git.kernel.org/stable/c/18f60ee882403d5b48097f5f6ae45f794e4cc643 (opens in a new tab)
- https://git.kernel.org/stable/c/810f204ef8f61f0c930cf6b3280050b3ee6a8ae7 (opens in a new tab)
- https://git.kernel.org/stable/c/744e61bd06188d8bb068c26a461c252f242b05c9 (opens in a new tab)
- https://git.kernel.org/stable/c/273f9d667cde649f8de9d72b1303cc2f4b658c50 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-103722 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://cveledger.app/cve/CVE-2026-98482)Record last updated .