CVE-2026-64004
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
net/iucv: fix locking in .getsockopt
In the Linux kernel, the following vulnerability has been resolved: net/iucv: fix locking in .getsockopt Mirror iucv_sock_setsockopt() and wrap the whole switch in lock_sock()/release_sock(). The pre-existing SO_MSGLIMIT-only lock becomes redundant and is removed. Any AF_IUCV HIPER user can potentially crash the kernel by racing recvmsg() with getsockopt(SO_MSGSIZE): the SO_MSGSIZE arm dereferences iucv->hs_dev->mtu after iucv_sock_close() (called from the racing recvmsg()) has set hs_dev to NULL, producing a NULL pointer dereference oops.
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) |
|---|---|---|---|---|---|
| 51363b8751a673a00ad48eea895266396d53fa52 | affected | git | 884eb247b74d86db97e3a37f0d6fc8e1e83590dd | Unavailable | None listed |
| 51363b8751a673a00ad48eea895266396d53fa52 | affected | git | 45bb8de8c95d8899f4b8f61bd9bceb8132af73cb | Unavailable | None listed |
| 51363b8751a673a00ad48eea895266396d53fa52 | affected | git | 1fc30bd4e55e2dd622d2d366cecd732c1841bbee | Unavailable | None listed |
| 51363b8751a673a00ad48eea895266396d53fa52 | affected | git | cd691beafea0dd779e69e81ccc26b0ab50efcb5e | Unavailable | None listed |
| 51363b8751a673a00ad48eea895266396d53fa52 | affected | git | 6e792b8dd3002bbc4136745928a9605df1a72b8a | Unavailable | None listed |
| 51363b8751a673a00ad48eea895266396d53fa52 | affected | git | 9817369243380e287ebe5525411557eaa3aa2a79 | Unavailable | None listed |
| 51363b8751a673a00ad48eea895266396d53fa52 | affected | git | 69554adc7a6fa04ede3ad7512321d83748e3c920 | Unavailable | None listed |
| 51363b8751a673a00ad48eea895266396d53fa52 | affected | git | 3589d20a666caf30ad100c960a2de7de390fce88 | 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) |
|---|---|---|---|---|---|
| 3.4 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 3.4 | Unavailable | None listed |
| 5.10.259 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.210 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.176 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.143 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.93 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.35 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.0.12 | unaffected | semver | Unavailable | 7.0.* | None listed |
| 7.1 | unaffected | original_commit_for_fix | Unavailable | * | None listed |