mm: huge_memory: don't force huge page alignment on 32 bit
Priority LOW 38Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · Low
- Fix status
- Partial Red Hat: 2 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.
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/[email protected]/ [2] https://lore.kernel.org/linux-mm/CAJuCfpHXLdQy1a2B6xN2d7quTYwg2OoZseYPZTRpU0eHHKD-sQ@mail.gmail.com/
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01014 63rd percentileScored 2026-11-07
Fix Partial Linux (Linux): 6.1.81, 6.6.46, 6.7.6 +1Red Hat: 2 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 5.18 and later | 6.1.81, 6.6.46, 6.7.6, 6.8 | Patch available | CNA |
- Linux VendorLinux Affected 5.18 and later Fixed in 6.1.81, 6.6.46, 6.7.6, 6.8 Patch available CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.18 to before 6.1.81; 6.2 to before 6.6.46; 6.7 to before 6.7.6 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.8:rc1:*:*:*:*:*:* | 6.8 rc1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.8:rc2:*:*:*:*:*:* | 6.8 rc2 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.18 to before 6.1.81; 6.2 to before 6.6.46; 6.7 to before 6.7.6 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.8:rc1:*:*:*:*:*:* Versions 6.8 rc1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.8:rc2:*:*:*:*:*:* Versions 6.8 rc2 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.1.81, 6.6.46, 6.7.6, 6.8
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
Not affected: 2 products
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2024-26621
- 2026-10-03 Alias added: GHSA-pv98-48f2-5vjr
References
Patch 27
- 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
- http://www.openwall.com/lists/oss-security/2024/07/08/3
- http://www.openwall.com/lists/oss-security/2024/07/08/4
- http://www.openwall.com/lists/oss-security/2024/07/08/5
- 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/2024/07/15/1
- http://www.openwall.com/lists/oss-security/2024/07/15/2
- 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
- https://zolutal.github.io/aslrnt/
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Sources
- CVE-2024-26621 · CVE Program
- CVE-2024-26621 · NVD
- FIRST EPSS
- GHSA-pv98-48f2-5vjr · GitHub Advisory Database · CC BY 4.0
- CVE-2024-26621 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences