Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: sctp: sysctl: cookie_hmac_alg: 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, as this is the only member needed from the 'net' structure, but that would increase the size of this fix, to use '*data' everywhere 'net->sctp.sctp_hmac_alg' is used.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 3c68198e75111a905ac2412be12bf7b29099729b before 5599b212d2f4466e1832a94e9932684aaa364587; affected 3c68198e75111a905ac2412be12bf7b29099729b before 03ca51faba2b017bf6c90e139434c4117d0afcdc; affected 3c68198e75111a905ac2412be12bf7b29099729b before 86ddf8118123cb58a0fb8724cad6979c4069065b; affected 3c68198e75111a905ac2412be12bf7b29099729b before 3cd0659deb9c03535fd61839e91d4d4d3e51ac71; affected 3c68198e75111a905ac2412be12bf7b29099729b before ad673e514b2793b8d5902f6ba6ab7e890dea23d5; affected 3c68198e75111a905ac2412be12bf7b29099729b before f0bb3935470684306e4e04793a20ac4c4b08de0b; affected 3c68198e75111a905ac2412be12bf7b29099729b before ea62dd1383913b5999f3d16ae99d411f41b528d4 |
| Linux / Linux | affected 3.8; unaffected 0 before 3.8; unaffected 5.4.292 through 5.4.*; unaffected 5.10.234 through 5.10.*; unaffected 5.15.177 through 5.15.*; unaffected 6.1.125 through 6.1.*; unaffected 6.6.72 through 6.6.*; unaffected 6.12.10 through 6.12.*; unaffected 6.13 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/5599b212d2f4466e1832a94e9932684aaa364587
- https://git.kernel.org/stable/c/03ca51faba2b017bf6c90e139434c4117d0afcdc
- https://git.kernel.org/stable/c/86ddf8118123cb58a0fb8724cad6979c4069065b
- https://git.kernel.org/stable/c/3cd0659deb9c03535fd61839e91d4d4d3e51ac71
- https://git.kernel.org/stable/c/ad673e514b2793b8d5902f6ba6ab7e890dea23d5
- https://git.kernel.org/stable/c/f0bb3935470684306e4e04793a20ac4c4b08de0b
- https://git.kernel.org/stable/c/ea62dd1383913b5999f3d16ae99d411f41b528d4
ADP enrichment
No English description supplied.
No English description supplied.
No English description supplied.
No references supplied.