CVE-2026-31629
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
nfc: llcp: add missing return after LLCP_CLOSED checks
In the Linux kernel, the following vulnerability has been resolved: nfc: llcp: add missing return after LLCP_CLOSED checks In nfc_llcp_recv_hdlc() and nfc_llcp_recv_disc(), when the socket state is LLCP_CLOSED, the code correctly calls release_sock() and nfc_llcp_sock_put() but fails to return. Execution falls through to the remainder of the function, which calls release_sock() and nfc_llcp_sock_put() again. This results in a double release_sock() and a refcount underflow via double nfc_llcp_sock_put(), leading to a use-after-free. Add the missing return statements after the LLCP_CLOSED branches in both functions to prevent the fall-through.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| d646960f7986fefb460a2b062d5ccc8ccfeacc3a | affected | git | b2a23529593d011fb433a3d711fc597ed6a6bd2f | Unavailable | None listed |
| d646960f7986fefb460a2b062d5ccc8ccfeacc3a | affected | git | 665315df9c3486cb213fc44d83cc8bcd47fe0d26 | Unavailable | None listed |
| d646960f7986fefb460a2b062d5ccc8ccfeacc3a | affected | git | 9b49e2a4b8219a2fc5cebf94f4ec34e509aff8a6 | Unavailable | None listed |
| d646960f7986fefb460a2b062d5ccc8ccfeacc3a | affected | git | 0eb1263a3b8c36418c9ba295c9ab3abed664edbf | Unavailable | None listed |
| d646960f7986fefb460a2b062d5ccc8ccfeacc3a | affected | git | 796e0cac058252d0ad34ebe288e6f7979b5fc9b2 | Unavailable | None listed |
| d646960f7986fefb460a2b062d5ccc8ccfeacc3a | affected | git | 8977fad2b3c6eefd414131168d597c5d1d5e1abf | Unavailable | None listed |
| d646960f7986fefb460a2b062d5ccc8ccfeacc3a | affected | git | ff3d9e8f7244293e303f7b6ef70774291c7c27e9 | Unavailable | None listed |
| d646960f7986fefb460a2b062d5ccc8ccfeacc3a | affected | git | aba4712e8f0381cd5d196534ce2ad082626a5ab6 | Unavailable | None listed |
| d646960f7986fefb460a2b062d5ccc8ccfeacc3a | affected | git | 2b5dd4632966c39da6ba74dbc8689b309065e82c | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 3.3 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 3.3 | Unavailable | None listed |
| 5.10.258 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.209 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.175 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.136 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.83 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.24 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 6.19.14 | unaffected | semver | Unavailable | 6.19.* | None listed |
| 7.0.1 | unaffected | semver | Unavailable | 7.0.* | None listed |
| 7.1 | unaffected | original_commit_for_fix | Unavailable | * | None listed |