Tracker / CVE-2025-21638
CVE-2025-21638
In the Linux kernel, the following vulnerability has been resolved: sctp: sysctl: auth_enable: 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.
Prodotti e versioni affette
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 3.10.41 → 3.11 |
| linux | linux_kernel · 3.12.20 → 3.13 |
| linux | linux_kernel · 3.14.5 → 5.4.290 |
| linux | linux_kernel · 5.11 → 5.15.177 |
| linux | linux_kernel · 5.16 → 6.1.125 |
| linux | linux_kernel · 5.5 → 5.10.234 |
| linux | linux_kernel · 6.2 → 6.6.72 |
| linux | linux_kernel · 6.7 → 6.12.10 |