Description
In the Linux kernel, the following vulnerability has been resolved: llc: fix SAP refcount leak in llc_ui_autobind() llc_ui_autobind() opens a SAP after choosing a dynamic LSAP. llc_sap_open() returns a reference owned by the caller, and llc_sap_add_socket() takes a second reference for the socket's membership in the SAP hash tables. llc_ui_bind() drops the caller's reference after adding the socket, but llc_ui_autobind() keeps it. When the socket is closed, llc_sap_remove_socket() releases only the socket reference, leaving the SAP on llc_sap_list with sk_count == 0. This is user-visible because repeated autobind and close cycles can consume all dynamic SAP values and make later autobinds fail with -EUSERS. Drop the caller's reference after a successful autobind, matching llc_ui_bind()'s ownership model.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 79dc4b508e3f2649390a1f745f7657813e5938ecaffected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < a2f9fa31ae021ef1fdcaf3ab17bd49f9223dd6a4affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < b589a965184dde49c43b8caf5bcc65715a7b4ef2affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < c7881b6088276601beaccb7440b8d56eab0d65aeaffected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < b2fc9955ddc7c4ca03be44b995193bd6486c62e1affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 61a7ff4a62003b55a15022567486741b3bd83914affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 21a537606fe35be2b85971a5fd35c0023b6ef98faffected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 660667cd406648bbaffbd5c0d897c2263a852f11affected
Linux Linux
Default version status: affected
2.6.12affected0 to < 2.6.12unaffected5.10.261 to ≤ 5.10.*unaffected5.15.212 to ≤ 5.15.*unaffected6.1.178 to ≤ 6.1.*unaffected6.6.145 to ≤ 6.6.*unaffected6.12.97 to ≤ 6.12.*unaffected6.18.40 to ≤ 6.18.*unaffected7.1.5 to ≤ 7.1.*unaffected7.2 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/79dc4b508e3f2649390a1f745f7657813e5938ec ↗
- https://git.kernel.org/stable/c/a2f9fa31ae021ef1fdcaf3ab17bd49f9223dd6a4 ↗
- https://git.kernel.org/stable/c/b589a965184dde49c43b8caf5bcc65715a7b4ef2 ↗
- https://git.kernel.org/stable/c/c7881b6088276601beaccb7440b8d56eab0d65ae ↗
- https://git.kernel.org/stable/c/b2fc9955ddc7c4ca03be44b995193bd6486c62e1 ↗
- https://git.kernel.org/stable/c/61a7ff4a62003b55a15022567486741b3bd83914 ↗
- https://git.kernel.org/stable/c/21a537606fe35be2b85971a5fd35c0023b6ef98f ↗
- https://git.kernel.org/stable/c/660667cd406648bbaffbd5c0d897c2263a852f11 ↗