CVE-2026-64010nfc: llcp: Fix use-after-free race in nfc_llcp_recv_cc()
- 8.8HighCVSS base score
- 0.20%Exploitation in 30 daysEPSS · top 90% 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: Fix use-after-free race in nfc_llcp_recv_cc() A race condition exists in the NFC LLCP connection state machine where the connection acceptance packet (CC) can be processed concurrently with socket release. This can lead to a use-after-free of the socket object. When nfc_llcp_recv_cc() moves the socket from the connecting_sockets list to the sockets list, it does so without holding the socket lock. If llcp_sock_release() is executing concurrently, it might have already unlinked the socket and dropped its references, which can result in nfc_llcp_recv_cc() linking a freed socket into the live list. Fix this by holding lock_sock() during the state transition and list movement in nfc_llcp_recv_cc(). After acquiring the lock, check if the socket is still hashed to ensure it hasn't already been unlinked and marked for destruction by the release path. This aligns the locking pattern with recv_hdlc() and recv_disc().
Timeline
ID reserved
By Linux
Published
- 17 days later
· 17 days 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
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High8.8 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Analyzed | 3.1 | High8.8 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.20% · top 90% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.
Affected products
- affected a69f32af86e389dd232b1bb2269e202c1bfcc60f – < dce85215a6c7b0fd753f577a4c487f647119884c
- affected a69f32af86e389dd232b1bb2269e202c1bfcc60f – < bd08bb7443c501d2f2a71d529e4afcf11c9b07d2
- affected a69f32af86e389dd232b1bb2269e202c1bfcc60f – < 0b45c31746e1523d5d482fda8fcf54a35ac417f1
- affected a69f32af86e389dd232b1bb2269e202c1bfcc60f – < ee2d1a8a1833c5e56e9a1745e64b0b4edda732c2
- affected a69f32af86e389dd232b1bb2269e202c1bfcc60f – < ad8a27d63cac96bac441edd002209ebd996e12fb
- affected a69f32af86e389dd232b1bb2269e202c1bfcc60f – < 650bdd8fdfab64a09ee474150313dbc48c374795
- affected a69f32af86e389dd232b1bb2269e202c1bfcc60f – < b2a60f7f846faaf5c2cdad4ea6d3a33e5f863183
- affected a69f32af86e389dd232b1bb2269e202c1bfcc60f – < b493ea2765cc17cb8aa7e7544a4b6dcb05b6ed77
- affected 3.6
- unaffected < 3.6
- unaffected 5.10.259 – ≤ 5.10.*
- unaffected 5.15.210 – ≤ 5.15.*
- unaffected 6.1.176 – ≤ 6.1.*
- unaffected 6.6.143 – ≤ 6.6.*
- unaffected 6.12.93 – ≤ 6.12.*
- unaffected 6.18.35 – ≤ 6.18.*
- unaffected 7.0.12 – ≤ 7.0.*
- unaffected 7.1 – ≤ *
References
References8
- https://git.kernel.org/stable/c/dce85215a6c7b0fd753f577a4c487f647119884c (opens in a new tab)
- https://git.kernel.org/stable/c/bd08bb7443c501d2f2a71d529e4afcf11c9b07d2 (opens in a new tab)
- https://git.kernel.org/stable/c/0b45c31746e1523d5d482fda8fcf54a35ac417f1 (opens in a new tab)
- https://git.kernel.org/stable/c/ee2d1a8a1833c5e56e9a1745e64b0b4edda732c2 (opens in a new tab)
- https://git.kernel.org/stable/c/ad8a27d63cac96bac441edd002209ebd996e12fb (opens in a new tab)
- https://git.kernel.org/stable/c/650bdd8fdfab64a09ee474150313dbc48c374795 (opens in a new tab)
- https://git.kernel.org/stable/c/b2a60f7f846faaf5c2cdad4ea6d3a33e5f863183 (opens in a new tab)
- https://git.kernel.org/stable/c/b493ea2765cc17cb8aa7e7544a4b6dcb05b6ed77 (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-2026-45583 (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-2026-64010)Record last updated .