Answer in brief
CVE-2026-80851 records a Unknown severity vulnerability in gtp: serialize PDP context updates. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=459aa660eb1d8ce67080da1983bb81d716aa5a69 <b4ac2a5ce5a96ec21ed48f60d30b52b1fb22c62a || >=459aa660eb1d8ce67080da1983bb81d716aa5a69 <5f77ddb2756340c1b05381674ca025d52998005e || >=459aa660eb1d8ce67080da1983bb81d716aa5a69 <3d950e98f74af9611925a5226edced02155f6ed1 || >=459aa660eb1d8ce67080da1983bb81d716aa5a69 <6df4f05bc2991467939d7d80b6f7e121559cc3df || >=459aa660eb1d8ce67080da1983bb81d716aa5a69 <1e995498d29784a06a2b2899370a1926cfc8410d || >=459aa660eb1d8ce67080da1983bb81d716aa5a69 <498386b6d402737db1e2eeed4c385acbf0ef9e34 | b4ac2a5ce5a96ec21ed48f60d30b52b1fb22c62a, 5f77ddb2756340c1b05381674ca025d52998005e, 3d950e98f74af9611925a5226edced02155f6ed1, 6df4f05bc2991467939d7d80b6f7e121559cc3df, 1e995498d29784a06a2b2899370a1926cfc8410d, 498386b6d402737db1e2eeed4c385acbf0ef9e34 |
| Linux/Linuxgeneric | 4.7 | Not reported |
| Linux/Linuxgeneric | >=459aa660eb1d8ce67080da1983bb81d716aa5a69 <5f77ddb2756340c1b05381674ca025d52998005e || >=459aa660eb1d8ce67080da1983bb81d716aa5a69 <3d950e98f74af9611925a5226edced02155f6ed1 || >=459aa660eb1d8ce67080da1983bb81d716aa5a69 <6df4f05bc2991467939d7d80b6f7e121559cc3df || >=459aa660eb1d8ce67080da1983bb81d716aa5a69 <1e995498d29784a06a2b2899370a1926cfc8410d || >=459aa660eb1d8ce67080da1983bb81d716aa5a69 <498386b6d402737db1e2eeed4c385acbf0ef9e34 | 5f77ddb2756340c1b05381674ca025d52998005e, 3d950e98f74af9611925a5226edced02155f6ed1, 6df4f05bc2991467939d7d80b6f7e121559cc3df, 1e995498d29784a06a2b2899370a1926cfc8410d, 498386b6d402737db1e2eeed4c385acbf0ef9e34 |
Published upstream
Sep 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 4, 2026
In the Linux kernel, the following vulnerability has been resolved: gtp: serialize PDP context updates PDP contexts can be deleted through GTP_CMD_DELPDP or while the GTP network device is being unregistered. The latter is serialized by RTNL, but the generic-netlink delete path only holds RCU. Running both paths concurrently can therefore make both paths delete the same PDP context. The issue was found through static analysis and reproduced on a KASAN-enabled kernel by a simple two-thread program racing GTP_CMD_DELPDP against RTM_DELLINK: Oops: general protection fault, probably for non-canonical address KASAN: maybe wild-memory-access in range [0xdead000000000120-0xdead000000000127] RIP: gtp_genl_del_pdp+0x1c1/0x420 [gtp] RBP: dead000000000122 The second deletion dereferenced the poisoned hlist pprev pointer. Serialize gtp_pdp_add(), gtp_genl_del_pdp(), and gtp_dellink() with a shared mutex. Keep the mutex held until the final use of a PDP context in the NEWPDP path, and keep the RCU read-side section around the complete PDP context use in the DELPDP path.
Quoted source text, attributed separately from HOL analysis.