Out-of-bounds Write Affecting kernel-debuginfo-common-x86_64 package, versions <0:4.14.348-265.562.amzn2
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Test your applications- Snyk ID SNYK-AMZN2-KERNELDEBUGINFOCOMMONX8664-7447562
- published 13 Jul 2024
- disclosed 30 May 2024
Introduced: 30 May 2024
CVE-2024-36883 Open this link in a new tabHow to fix?
Upgrade Amazon-Linux:2 kernel-debuginfo-common-x86_64 to version 0:4.14.348-265.562.amzn2 or higher.
This issue was patched in ALAS2-2024-2581.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-debuginfo-common-x86_64 package and not the kernel-debuginfo-common-x86_64 package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2 relevant fixed versions and status.
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.
References
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-36883
- https://git.kernel.org/stable/c/0c3248bc708a7797be573214065cf908ff1f54c7
- https://git.kernel.org/stable/c/2d60ff5874aefd006717ca5e22ac1e25eac29c42
- https://git.kernel.org/stable/c/3cdc34d76c4f777579e28ad373979d36c030cfd3
- https://git.kernel.org/stable/c/7b0e64583eab8c1d896b47e5dd0bf2e7d86ec41f
- https://git.kernel.org/stable/c/9518b79bfd2fbf99fa9b7e8e36bcb1825e7ba030
- https://git.kernel.org/stable/c/a26ff37e624d12e28077e5b24d2b264f62764ad6
- https://git.kernel.org/stable/c/b6dbfd5bcc267a95a0bf1bf96af46243f96ec6cd
- https://git.kernel.org/stable/c/f4f94587e1bf87cb40ec33955a9d90148dd026ab
- https://lists.debian.org/debian-lts-announce/2024/06/msg00019.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html