Description
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 products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
3c68198e75111a905ac2412be12bf7b29099729b to < 5599b212d2f4466e1832a94e9932684aaa364587affected3c68198e75111a905ac2412be12bf7b29099729b to < 03ca51faba2b017bf6c90e139434c4117d0afcdcaffected3c68198e75111a905ac2412be12bf7b29099729b to < 86ddf8118123cb58a0fb8724cad6979c4069065baffected3c68198e75111a905ac2412be12bf7b29099729b to < 3cd0659deb9c03535fd61839e91d4d4d3e51ac71affected3c68198e75111a905ac2412be12bf7b29099729b to < ad673e514b2793b8d5902f6ba6ab7e890dea23d5affected3c68198e75111a905ac2412be12bf7b29099729b to < f0bb3935470684306e4e04793a20ac4c4b08de0baffected3c68198e75111a905ac2412be12bf7b29099729b to < ea62dd1383913b5999f3d16ae99d411f41b528d4affected
Linux Linux
Default version status: affected
3.8affected0 to < 3.8unaffected5.4.292 to ≤ 5.4.*unaffected5.10.234 to ≤ 5.10.*unaffected5.15.177 to ≤ 5.15.*unaffected6.1.125 to ≤ 6.1.*unaffected6.6.72 to ≤ 6.6.*unaffected6.12.10 to ≤ 6.12.*unaffected6.13 to ≤ *unaffected
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 ↗
- https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html ↗
- https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html ↗
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html ↗