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CVE-2026-80851: Linux

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CVSS

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Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

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    Описание

    Оригинално описание

    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.

    Засегнати продукти

    • Linux Linux: 459aa660eb1d8ce67080da1983bb81d716aa5a69 преди d8ebf8875fb97b3e39aa226af78f9c619e96ee31; 459aa660eb1d8ce67080da1983bb81d716aa5a69 преди 6e5472c1c1619793cbadb02bccf7d2d9f826052f; 459aa660eb1d8ce67080da1983bb81d716aa5a69 преди d9a83492ffc99f228d91873473e3820300525f00; 459aa660eb1d8ce67080da1983bb81d716aa5a69 преди b4ac2a5ce5a96ec21ed48f60d30b52b1fb22c62a; 459aa660eb1d8ce67080da1983bb81d716aa5a69 преди 5f77ddb2756340c1b05381674ca025d52998005e; 459aa660eb1d8ce67080da1983bb81d716aa5a69 преди 3d950e98f74af9611925a5226edced02155f6ed1; 459aa660eb1d8ce67080da1983bb81d716aa5a69 преди 6df4f05bc2991467939d7d80b6f7e121559cc3df; 459aa660eb1d8ce67080da1983bb81d716aa5a69 преди 1e995498d29784a06a2b2899370a1926cfc8410d; 459aa660eb1d8ce67080da1983bb81d716aa5a69 преди 498386b6d402737db1e2eeed4c385acbf0ef9e34
    • Linux Linux: 4.7; преди 4.7; 5.10.273 до 5.10.*; 5.15.224 до 5.15.*; 6.1.191 до 6.1.*; 6.6.158 до 6.6.*; 6.12.108 до 6.12.*; 6.18.49 до 6.18.*; 7.1.13 до 7.1.*; 7.2.3 до 7.2.*; от 7.3 нататък

    История

    • 4 септември 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-80851: Linux | freedomonline.bg