Description
In the Linux kernel, the following vulnerability has been resolved: net: fix out-of-bounds access in ops_init net_alloc_generic is called by net_alloc, which is called without any locking. It reads max_gen_ptrs, which is changed under pernet_ops_rwsem. It is read twice, first to allocate an array, then to set s.len, which is later used to limit the bounds of the array access. It is possible that the array is allocated and another thread is registering a new pernet ops, increments max_gen_ptrs, which is then used to set s.len with a larger than allocated length for the variable array. Fix it by reading max_gen_ptrs only once in net_alloc_generic. If max_gen_ptrs is later incremented, it will be caught in net_assign_generic.
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
073862ba5d249c20bd5c49fc6d904ff0e1f6a672 to < 3cdc34d76c4f777579e28ad373979d36c030cfd3affected073862ba5d249c20bd5c49fc6d904ff0e1f6a672 to < 7b0e64583eab8c1d896b47e5dd0bf2e7d86ec41faffected073862ba5d249c20bd5c49fc6d904ff0e1f6a672 to < 0c3248bc708a7797be573214065cf908ff1f54c7affected073862ba5d249c20bd5c49fc6d904ff0e1f6a672 to < 9518b79bfd2fbf99fa9b7e8e36bcb1825e7ba030affected073862ba5d249c20bd5c49fc6d904ff0e1f6a672 to < 2d60ff5874aefd006717ca5e22ac1e25eac29c42affected073862ba5d249c20bd5c49fc6d904ff0e1f6a672 to < b6dbfd5bcc267a95a0bf1bf96af46243f96ec6cdaffected073862ba5d249c20bd5c49fc6d904ff0e1f6a672 to < f4f94587e1bf87cb40ec33955a9d90148dd026abaffected073862ba5d249c20bd5c49fc6d904ff0e1f6a672 to < a26ff37e624d12e28077e5b24d2b264f62764ad6affected561331eae0a03d0c4cf60f3cf485aa3e8aa5ab48affecteda2c82f7bee1ffa9eafa1fb0bd886a7eea8c9e497affected3.0.19 to < 3.1affected3.2.3 to < 3.3affected
Linux Linux
Default version status: affected
3.3affected0 to < 3.3unaffected4.19.314 to ≤ 4.19.*unaffected5.4.276 to ≤ 5.4.*unaffected5.10.217 to ≤ 5.10.*unaffected5.15.159 to ≤ 5.15.*unaffected6.1.91 to ≤ 6.1.*unaffected6.6.31 to ≤ 6.6.*unaffected6.8.10 to ≤ 6.8.*unaffected6.9 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/3cdc34d76c4f777579e28ad373979d36c030cfd3 ↗
- https://git.kernel.org/stable/c/7b0e64583eab8c1d896b47e5dd0bf2e7d86ec41f ↗
- https://git.kernel.org/stable/c/0c3248bc708a7797be573214065cf908ff1f54c7 ↗
- https://git.kernel.org/stable/c/9518b79bfd2fbf99fa9b7e8e36bcb1825e7ba030 ↗
- https://git.kernel.org/stable/c/2d60ff5874aefd006717ca5e22ac1e25eac29c42 ↗
- https://git.kernel.org/stable/c/b6dbfd5bcc267a95a0bf1bf96af46243f96ec6cd ↗
- https://git.kernel.org/stable/c/f4f94587e1bf87cb40ec33955a9d90148dd026ab ↗
- https://git.kernel.org/stable/c/a26ff37e624d12e28077e5b24d2b264f62764ad6 ↗
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html ↗
- https://lists.debian.org/debian-lts-announce/2024/06/msg00019.html ↗
- https://security.netapp.com/advisory/ntap-20241018-0001/ ↗