CVE-2024-26621

Summary

In the Linux kernel, the following vulnerability has been resolved:

mm: huge_memory: don't force huge page alignment on 32 bit

commit efa7df3e3bb5 ("mm: align larger anonymous mappings on THP boundaries") caused two issues [1] [2] reported on 32 bit system or compat userspace.

It doesn't make too much sense to force huge page alignment on 32 bit system due to the constrained virtual address space.

[1] https://lore.kernel.org/linux-mm/d0a136a0-4a31-46bc-adf4-2db109a61672@kernel.org/ [2] https://lore.kernel.org/linux-mm/CAJuCfpHXLdQy1a2B6xN2d7quTYwg2OoZseYPZTRpU0eHHKD-sQ@mail.gmail.com/

Affected Software

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

• https://git.kernel.org/stable/c/87632bc9ecff5ded93433bc0fca428019bdd1cfe
• https://git.kernel.org/stable/c/7432376c913381c5f24d373a87ff629bbde94b47
• https://git.kernel.org/stable/c/4ef9ad19e17676b9ef071309bc62020e2373705d
• https://zolutal.github.io/aslrnt/
• http://www.openwall.com/lists/oss-security/2024/07/08/3
• http://www.openwall.com/lists/oss-security/2024/07/08/5
• http://www.openwall.com/lists/oss-security/2024/07/08/4
• http://www.openwall.com/lists/oss-security/2024/07/08/6
• http://www.openwall.com/lists/oss-security/2024/07/08/7
• http://www.openwall.com/lists/oss-security/2024/07/08/8
• http://www.openwall.com/lists/oss-security/2024/07/09/1
• http://www.openwall.com/lists/oss-security/2024/07/10/5
• http://www.openwall.com/lists/oss-security/2024/07/10/7
• http://www.openwall.com/lists/oss-security/2024/07/10/8
• http://www.openwall.com/lists/oss-security/2024/07/11/4
• http://www.openwall.com/lists/oss-security/2024/07/11/5
• http://www.openwall.com/lists/oss-security/2024/07/11/7
• http://www.openwall.com/lists/oss-security/2024/07/12/3
• http://www.openwall.com/lists/oss-security/2024/07/13/2
• http://www.openwall.com/lists/oss-security/2024/07/13/7
• http://www.openwall.com/lists/oss-security/2024/07/15/2
• http://www.openwall.com/lists/oss-security/2024/07/15/1
• http://www.openwall.com/lists/oss-security/2024/07/16/1
• http://www.openwall.com/lists/oss-security/2024/07/16/2
• http://www.openwall.com/lists/oss-security/2024/07/29/2
• http://www.openwall.com/lists/oss-security/2024/07/30/2

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

References

• https://git.kernel.org/stable/c/87632bc9ecff5ded93433bc0fca428019bdd1cfe
• https://git.kernel.org/stable/c/6ea9aa8d97e6563676094cb35755884173269555
• https://git.kernel.org/stable/c/7432376c913381c5f24d373a87ff629bbde94b47
• https://git.kernel.org/stable/c/4ef9ad19e17676b9ef071309bc62020e2373705d

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