CVE-2025-71197: linux

CVSS: UnknownDeferred
AliasesUBUNTU-CVE-2025-71197DEBIAN-CVE-2025-71197
Published 04-02-2026Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2025-71197 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.25% chance of exploitation in the next 30 days, higher than 15.7% of scored vulnerabilities.

Overall risk
0/100
0100
Minimal · default modelHow is this calculated?
CVSS score
Not scored
010
No CVSS score recorded
EPSS score
0.25%
0%100%
Low · +0.05 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 44 · Related 38
DLA-4475-1DLA-4476-1DSA-6126-1DSA-6127-1MGASA-2026-0097MGASA-2026-0098

Timeline

  1. 04-02-2026
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.25%

Chance of exploitation in the next 30 days

Percentile

16%

Versus all other CVEs

30-day change

+0.05 pp

From 0.20% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.25%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu145 products
  • linux< 5.15.0-176.186 | < 6.8.0-117.117 | All versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1105.112 | < 6.8.0-1055.58 | All versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 6.1.162-1 | < 6.12.69-1 | < 6.18.8-1
Linux1 product
  • linux≥ e2c94d6f572079511945e64537eb1218643f2e68, < 49ff9b4b9deacbefa6654a0a2bcaf910c9de7e95 | ≥ e2c94d6f572079511945e64537eb1218643f2e68, < 060b08d72a38b158a7f850d4b83c17c2969e0f6b | ≥ e2c94d6f572079511945e64537eb1218643f2e68, < b3fc3e1f04dcc7c41787bbf08a6e0d2728e022cf | ≥ e2c94d6f572079511945e64537eb1218643f2e68, < 6a5820ecfa5a76c3d3e154802c8c15f391ef442e | ≥ e2c94d6f572079511945e64537eb1218643f2e68, < 6fd6d2a8e41b7f544a4d26cbd60bedf9c67893a0 | ≥ e2c94d6f572079511945e64537eb1218643f2e68, < e6b2609af21b5cccc9559339591b8a2cbf884169 | ≥ e2c94d6f572079511945e64537eb1218643f2e68, < 761fcf46a1bd797bd32d23f3ea0141ffd437668a | 5.8

3 vendors · 147 products

References

42 links
Show all 42 references