Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack: defer invalid log until after unlock TCP and SCTP conntrack paths can emit invalid-packet logs while ct->lock is still held. When invalid logging is routed to nfnetlink_log and conntrack export is enabled, the log path can re-enter conntrack netlink glue and dump the same conntrack again. Protocol attribute dumping may take ct->lock, so logging while holding that lock can deadlock. Defer the TCP invalid logs by storing only the minimal log context while ct->lock is held and emitting the log after unlocking. Also make the TCP timeout-lowering invalid path return whether a log is needed, then emit that log after unlocking. Do the same for the SCTP invalid state-transition log that can be reached while ct->lock is held. Add a lockdep assertion to nf_ct_l4proto_log_invalid() so future callers that log invalid conntracks while holding ct->lock are caught outside TCP and SCTP as well.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected d9a6f0d0df1899ff9086a57abc600e414f4b8cdd before ca97360eba4b3dc67f1804625542f4ccc774242a; affected d9a6f0d0df1899ff9086a57abc600e414f4b8cdd before 63853eb20bba4e00b7cd0b8cfc19337bbaaf5037; affected d9a6f0d0df1899ff9086a57abc600e414f4b8cdd before 9480fcf70a5aa9d320088a01c95df0e5e6391f4a; affected d9a6f0d0df1899ff9086a57abc600e414f4b8cdd before 0424186d570aa4d1ad17f516afb86bd9eaa4f42e; affected d9a6f0d0df1899ff9086a57abc600e414f4b8cdd before c0224327b7cbed9d3198e8dbec847281053dcd06; affected d9a6f0d0df1899ff9086a57abc600e414f4b8cdd before 2d19b95c9723001f214f7a47d67b09f46238f200 |
| Linux / Linux | affected 6.1; unaffected 0 before 6.1; unaffected 6.1.184 through 6.1.*; unaffected 6.6.152 through 6.6.*; unaffected 6.12.104 through 6.12.*; unaffected 6.18.45 through 6.18.*; unaffected 7.1.9 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/ca97360eba4b3dc67f1804625542f4ccc774242a
- https://git.kernel.org/stable/c/63853eb20bba4e00b7cd0b8cfc19337bbaaf5037
- https://git.kernel.org/stable/c/9480fcf70a5aa9d320088a01c95df0e5e6391f4a
- https://git.kernel.org/stable/c/0424186d570aa4d1ad17f516afb86bd9eaa4f42e
- https://git.kernel.org/stable/c/c0224327b7cbed9d3198e8dbec847281053dcd06
- https://git.kernel.org/stable/c/2d19b95c9723001f214f7a47d67b09f46238f200
ADP enrichment
No English description supplied.
No references supplied.