CVE-2025-37756
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2025
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
net: tls: explicitly disallow disconnect
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
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 3c4d7559159bfe1e3b94df3a657b2cda3a34e218 | affected | git | 7bdcf5bc35ae59fc4a0fa23276e84b4d1534a3cf | Unavailable | None listed |
| 3c4d7559159bfe1e3b94df3a657b2cda3a34e218 | affected | git | ac91c6125468be720eafde9c973994cb45b61d44 | Unavailable | None listed |
| 3c4d7559159bfe1e3b94df3a657b2cda3a34e218 | affected | git | f3ce4d3f874ab7919edca364c147ac735f9f1d04 | Unavailable | None listed |
| 3c4d7559159bfe1e3b94df3a657b2cda3a34e218 | affected | git | 2bcad8fefcecdd5f005d8c550b25d703c063c34a | Unavailable | None listed |
| 3c4d7559159bfe1e3b94df3a657b2cda3a34e218 | affected | git | 9fcbca0f801580cbb583e9cb274e2c7fbe766ca6 | Unavailable | None listed |
| 3c4d7559159bfe1e3b94df3a657b2cda3a34e218 | affected | git | c665bef891e8972e1d3ce5bbc0d42a373346a2c3 | Unavailable | None listed |
| 3c4d7559159bfe1e3b94df3a657b2cda3a34e218 | affected | git | 8513411ec321942bd3cfed53d5bb700665c67d86 | Unavailable | None listed |
| 3c4d7559159bfe1e3b94df3a657b2cda3a34e218 | affected | git | 5071a1e606b30c0c11278d3c6620cd6a24724cf6 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 4.13 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.13 | Unavailable | None listed |
| 5.10.237 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.181 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.135 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.88 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.24 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.13.12 | unaffected | semver | Unavailable | 6.13.* | None listed |
| 6.14.3 | unaffected | semver | Unavailable | 6.14.* | None listed |
| 6.15 | unaffected | original_commit_for_fix | Unavailable | * | None listed |