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PUBLISHED

CVE-2024-26705

parisc: BTLB: Fix crash when setting up BTLB at CPU bringup

Reserved:2024-02-19
Published:2024-04-03
Updated:2024-04-03

Description

In the Linux kernel, the following vulnerability has been resolved: parisc: BTLB: Fix crash when setting up BTLB at CPU bringup When using hotplug and bringing up a 32-bit CPU, ask the firmware about the BTLB information to set up the static (block) TLB entries. For that write access to the static btlb_info struct is needed, but since it is marked __ro_after_init the kernel segfaults with missing write permissions. Fix the crash by dropping the __ro_after_init annotation.

Product status

Default status
unaffected

e5ef93d02d6c before 54944f45470a
affected

e5ef93d02d6c before aa52be552766
affected

e5ef93d02d6c before 913b9d443a01
affected

Default status
affected

6.6
affected

Any version before 6.6
unaffected

6.6.18
unaffected

6.7.6
unaffected

6.8
unaffected

References

https://git.kernel.org/stable/c/54944f45470af5965fb9c28cf962ec30f38a8f5b

https://git.kernel.org/stable/c/aa52be55276614d33f22fbe7da36c40d6432d10b

https://git.kernel.org/stable/c/913b9d443a0180cf0de3548f1ab3149378998486

cve.org CVE-2024-26705

nvd.nist.gov CVE-2024-26705

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