NULL Pointer Dereference Affecting kernel-bootwrapper package, versions *
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Test your applications- Snyk ID SNYK-RHEL7-KERNELBOOTWRAPPER-8241513
- published 22 Oct 2024
- disclosed 21 Oct 2024
Introduced: 21 Oct 2024
CVE-2024-50058 Open this link in a new tabHow to fix?
There is no fixed version for RHEL:7 kernel-bootwrapper.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-bootwrapper package and not the kernel-bootwrapper package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
serial: protect uart_port_dtr_rts() in uart_shutdown() too
Commit af224ca2df29 (serial: core: Prevent unsafe uart port access, part 3) added few uport == NULL checks. It added one to uart_shutdown(), so the commit assumes, uport can be NULL in there. But right after that protection, there is an unprotected "uart_port_dtr_rts(uport, false);" call. That is invoked only if HUPCL is set, so I assume that is the reason why we do not see lots of these reports.
Or it cannot be NULL at this point at all for some reason :P.
Until the above is investigated, stay on the safe side and move this dereference to the if too.
I got this inconsistency from Coverity under CID 1585130. Thanks.
References
- https://access.redhat.com/security/cve/CVE-2024-50058
- https://git.kernel.org/stable/c/602babaa84d627923713acaf5f7e9a4369e77473
- https://git.kernel.org/stable/c/76ed24a34223bb2c6b6162e1d8389ec4e602a290
- https://git.kernel.org/stable/c/e418d91195d29d5f9c9685ff309b92b04b41dc40
- https://git.kernel.org/stable/c/399927f0f875b93f3d5a0336d382ba48b8671eb2
- https://git.kernel.org/stable/c/d7b5876a6e74cdf8468a478be6b23f2f5464ac7a
- https://git.kernel.org/stable/c/2fe399bb8efd0d325ab1138cf8e3ecf23a39e96d