Description
In the Linux kernel, the following vulnerability has been resolved: sctp: diag: reject stale associations in dump_one path The SCTP exact sock_diag lookup can hold a transport reference, block on lock_sock(sk), and then resume after sctp_association_free() has marked the association dead and freed its bind address list. When that happens, inet_assoc_attr_size() and inet_diag_msg_sctpasoc_fill() can still dereference association state that is no longer valid for reporting. In particular, inet_diag_msg_sctpasoc_fill() may read an empty bind-address list as a real sctp_sockaddr_entry and trigger an out-of-bounds read from unrelated association memory. Reject the association after taking the socket lock if it has been reaped or detached from the endpoint, and report the lookup as stale. This keeps the exact dump-one path from formatting torn association state.
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
8f840e47f190cbe61a96945c13e9551048d42cef to < 6657af827e21883ae90693e42e7f59a6aab690b5affected8f840e47f190cbe61a96945c13e9551048d42cef to < b2be72d401833194917e44fbd8d8144bb4f2db16affected8f840e47f190cbe61a96945c13e9551048d42cef to < 5425de8bd6e9fe5bd67d158e3348171ae7510117affected8f840e47f190cbe61a96945c13e9551048d42cef to < e97c2a535e23ed0fdd2660993fb3f10d9535c9bcaffected8f840e47f190cbe61a96945c13e9551048d42cef to < 480f754580b5686b928977d16a59f20cef83ff01affected8f840e47f190cbe61a96945c13e9551048d42cef to < 78c4f964b2f94e405721c093773f6250e1e676b2affected8f840e47f190cbe61a96945c13e9551048d42cef to < f5af203dec6e0e7a6090fcc2130e9f3901bfc84daffected8f840e47f190cbe61a96945c13e9551048d42cef to < 5eba3e48d78edd7551b992cb7ba687019b3a78daaffected
Linux Linux
Default version status: affected
4.7affected0 to < 4.7unaffected5.10.259 to ≤ 5.10.*unaffected5.15.210 to ≤ 5.15.*unaffected6.1.176 to ≤ 6.1.*unaffected6.6.143 to ≤ 6.6.*unaffected6.12.94 to ≤ 6.12.*unaffected6.18.36 to ≤ 6.18.*unaffected7.0.13 to ≤ 7.0.*unaffected7.1 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/6657af827e21883ae90693e42e7f59a6aab690b5 ↗
- https://git.kernel.org/stable/c/b2be72d401833194917e44fbd8d8144bb4f2db16 ↗
- https://git.kernel.org/stable/c/5425de8bd6e9fe5bd67d158e3348171ae7510117 ↗
- https://git.kernel.org/stable/c/e97c2a535e23ed0fdd2660993fb3f10d9535c9bc ↗
- https://git.kernel.org/stable/c/480f754580b5686b928977d16a59f20cef83ff01 ↗
- https://git.kernel.org/stable/c/78c4f964b2f94e405721c093773f6250e1e676b2 ↗
- https://git.kernel.org/stable/c/f5af203dec6e0e7a6090fcc2130e9f3901bfc84d ↗
- https://git.kernel.org/stable/c/5eba3e48d78edd7551b992cb7ba687019b3a78da ↗
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html ↗