CVE-2025-71197
w1: therm: Fix off-by-one buffer overflow in alarms_store
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved: w1: therm: Fix off-by-one buffer overflow in alarms_store The sysfs buffer passed to alarms_store() is allocated with 'size + 1'
bytes and a NUL terminator is appended. However, the 'size' argument
does not account for this extra byte. The original code then allocated
'size' bytes and used strcpy() to copy 'buf', which always writes one
byte past the allocated buffer since strcpy() copies until the NUL
terminator at index 'size'. Fix this by parsing the 'buf' parameter directly using simple_strtoll()
without allocating any intermediate memory or string copying. This
removes the overflow while simplifying the code.
Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks. For the oldstable distribution (bookworm), these problems have been fixed in version 6.1.162-1.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2026-01-31 CVE Reserved
- 2026-02-04 CVE Published
- 2026-02-09 CVE Updated
- 2026-03-08 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (8)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/e2c94d6f572079511945e64537eb1218643f2e68 | Vuln. Introduced |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
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Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.8 < 5.10.249 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.8 < 5.10.249" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.8 < 5.15.199 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.8 < 5.15.199" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.8 < 6.1.162 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.8 < 6.1.162" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.8 < 6.6.122 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.8 < 6.6.122" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.8 < 6.12.68 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.8 < 6.12.68" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.8 < 6.18.8 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.8 < 6.18.8" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.8 < 6.19 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.8 < 6.19" | en |
Affected
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