hwrng: ks-sa - fix division by zero in ks_sa_rng_init
Priority LOW 22Published · Updated
Key facts
- Attack vector
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- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
- —
- Confidentiality · integrity · availability
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- Fix status
- Fixed
No CVSS vector from any source. Fix status from CNA.
Summary
In the Linux kernel, the following vulnerability has been resolved: hwrng: ks-sa - fix division by zero in ks_sa_rng_init Fix division by zero in ks_sa_rng_init caused by missing clock pointer initialization. The clk_get_rate() call is performed on an uninitialized clk pointer, resulting in division by zero when calculating delay values. Add clock initialization code before using the clock. drivers/char/hw_random/ks-sa-rng.c | 7 +++++++ 1 file changed, 7 insertions(+)
Why it matters now
EPSS 0.00222 12th percentileScored 2026-11-07
Fix Fixed Linux (Linux): 5.10.246, 5.15.195, 6.1.156 +4
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.246, 5.15.195, 6.1.156, 6.6.112, 6.12.53, 6.17.3, 6.18
Vendor assessments
Red Hat
Not affected: 5 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2025-40127
- 2026-10-03 Alias added: GHSA-666w-62rj-5fc6
References
Other 7
- https://git.kernel.org/stable/c/692a04a1e0cde1d80a33df0078c755cf02cd7268
- https://git.kernel.org/stable/c/d76b099011fa056950f63d05ebb6160991242f6a
- https://git.kernel.org/stable/c/eec7e0e19c1fa75dc65e25aa6a21ef24a03849af
- https://git.kernel.org/stable/c/f4238064379a91e71a9c258996acac43c50c2094
- https://git.kernel.org/stable/c/2b6bcce32cb5aff84588a844a4d3f6dd5353b8e2
- https://git.kernel.org/stable/c/55a70e1de75e5ff5f961c79a2cdc6a4468cc2bf2
- https://git.kernel.org/stable/c/612b1dfeb414dfa780a6316014ceddf9a74ff5c0
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- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
Sources
- CVE-2025-40127 · CVE Program
- CVE-2025-40127 · NVD
- FIRST EPSS
- GHSA-666w-62rj-5fc6 · GitHub Advisory Database · CC BY 4.0
- CVE-2025-40127 · Red Hat security data · CC BY 4.0
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