Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: net: tls: explicitly disallow disconnect syzbot discovered that it can disconnect a TLS socket and then run into all sort of unexpected corner cases. I have a vague recollection of Eric pointing this out to us a long time ago. Supporting disconnect is really hard, for one thing if offload is enabled we'd need to wait for all packets to be _acked_. Disconnect is not commonly used, disallow it. The immediate problem syzbot run into is the warning in the strp, but that's just the easiest bug to trigger: WARNING: CPU: 0 PID: 5834 at net/tls/tls_strp.c:486 tls_strp_msg_load+0x72e/0xa80 net/tls/tls_strp.c:486 RIP: 0010:tls_strp_msg_load+0x72e/0xa80 net/tls/tls_strp.c:486 Call Trace: <TASK> tls_rx_rec_wait+0x280/0xa60 net/tls/tls_sw.c:1363 tls_sw_recvmsg+0x85c/0x1c30 net/tls/tls_sw.c:2043 inet6_recvmsg+0x2c9/0x730 net/ipv6/af_inet6.c:678 sock_recvmsg_nosec net/socket.c:1023 [inline] sock_recvmsg+0x109/0x280 net/socket.c:1045 __sys_recvfrom+0x202/0x380 net/socket.c:2237
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 3c4d7559159bfe1e3b94df3a657b2cda3a34e218 before 7bdcf5bc35ae59fc4a0fa23276e84b4d1534a3cf; affected 3c4d7559159bfe1e3b94df3a657b2cda3a34e218 before ac91c6125468be720eafde9c973994cb45b61d44; affected 3c4d7559159bfe1e3b94df3a657b2cda3a34e218 before f3ce4d3f874ab7919edca364c147ac735f9f1d04; affected 3c4d7559159bfe1e3b94df3a657b2cda3a34e218 before 2bcad8fefcecdd5f005d8c550b25d703c063c34a; affected 3c4d7559159bfe1e3b94df3a657b2cda3a34e218 before 9fcbca0f801580cbb583e9cb274e2c7fbe766ca6; affected 3c4d7559159bfe1e3b94df3a657b2cda3a34e218 before c665bef891e8972e1d3ce5bbc0d42a373346a2c3; affected 3c4d7559159bfe1e3b94df3a657b2cda3a34e218 before 8513411ec321942bd3cfed53d5bb700665c67d86; affected 3c4d7559159bfe1e3b94df3a657b2cda3a34e218 before 5071a1e606b30c0c11278d3c6620cd6a24724cf6 |
| Linux / Linux | affected 4.13; unaffected 0 before 4.13; unaffected 5.10.237 through 5.10.*; unaffected 5.15.181 through 5.15.*; unaffected 6.1.135 through 6.1.*; unaffected 6.6.88 through 6.6.*; unaffected 6.12.24 through 6.12.*; unaffected 6.13.12 through 6.13.*; unaffected 6.14.3 through 6.14.*; unaffected 6.15 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/7bdcf5bc35ae59fc4a0fa23276e84b4d1534a3cf
- https://git.kernel.org/stable/c/ac91c6125468be720eafde9c973994cb45b61d44
- https://git.kernel.org/stable/c/f3ce4d3f874ab7919edca364c147ac735f9f1d04
- https://git.kernel.org/stable/c/2bcad8fefcecdd5f005d8c550b25d703c063c34a
- https://git.kernel.org/stable/c/9fcbca0f801580cbb583e9cb274e2c7fbe766ca6
- https://git.kernel.org/stable/c/c665bef891e8972e1d3ce5bbc0d42a373346a2c3
- https://git.kernel.org/stable/c/8513411ec321942bd3cfed53d5bb700665c67d86
- https://git.kernel.org/stable/c/5071a1e606b30c0c11278d3c6620cd6a24724cf6
ADP enrichment
No English description supplied.
No English description supplied.
No references supplied.