CVE-2025-21637
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)
sctp: sysctl: udp_port: avoid using current->nsproxy
In the Linux kernel, the following vulnerability has been resolved: sctp: sysctl: udp_port: avoid using current->nsproxy As mentioned in a previous commit of this series, using the 'net' structure via 'current' is not recommended for different reasons: - Inconsistency: getting info from the reader's/writer's netns vs only from the opener's netns. - current->nsproxy can be NULL in some cases, resulting in an 'Oops' (null-ptr-deref), e.g. when the current task is exiting, as spotted by syzbot [1] using acct(2). The 'net' structure can be obtained from the table->data using container_of(). Note that table->data could also be used directly, but that would increase the size of this fix, while 'sctp.ctl_sock' still needs to be retrieved from 'net' structure.
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) |
|---|---|---|---|---|---|
| 046c052b475e7119b6a30e3483e2888fc606a2f8 | affected | git | 0a0966312ac3eedd7f5f2a766ed4702df39a9a65 | Unavailable | None listed |
| 046c052b475e7119b6a30e3483e2888fc606a2f8 | affected | git | e919197fb8616331f5dc81e4c3cc3d12769cb725 | Unavailable | None listed |
| 046c052b475e7119b6a30e3483e2888fc606a2f8 | affected | git | 55627918febdf9d71107a1e68d1528dc591c9a15 | Unavailable | None listed |
| 046c052b475e7119b6a30e3483e2888fc606a2f8 | affected | git | 5b77d73f3be5102720fb685b9e6900e3500e1096 | Unavailable | None listed |
| 046c052b475e7119b6a30e3483e2888fc606a2f8 | affected | git | c10377bbc1972d858eaf0ab366a311b39f8ef1b6 | 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) |
|---|---|---|---|---|---|
| 5.11 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.11 | Unavailable | None listed |
| 5.15.177 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.125 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.72 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.10 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.13 | unaffected | original_commit_for_fix | Unavailable | * | None listed |