CVE-2025-68177 json
cpufreq/longhaul: handle NULL policy in longhaul_exit
published 2025-12-16 10 mo ago modified 2026-10-14 26 d ago also EUVD-2025-203719
- cvss
- —
- not scored
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 11%
- public exploits
- 0
- none known
Summary
In the Linux kernel, the following vulnerability has been resolved:
cpufreq/longhaul: handle NULL policy in longhaul_exit
longhaul_exit() was calling cpufreq_cpu_get(0) without checking for a NULL policy pointer. On some systems, this could lead to a NULL dereference and a kernel warning or panic.
This patch adds a check using unlikely() and returns early if the policy is NULL.
Bugzilla: #219962
Patch / fix
- Linux Linux 5.4.302, 5.10.247, 5.15.197, 6.1.159, 6.6.117, 6.12.58, 6.17.8, 6.18
- linux Debian 12 6.1.159-1
- linux Debian 13 6.12.63-1
- linux Debian 14 6.17.8-1
debian advisories DEBIAN-CVE-2025-68177
- linux Ubuntu 22.04 LTS 5.15.0-173.183
- linux Ubuntu 24.04 LTS 6.8.0-106.106
- linux Ubuntu 25.10 6.17.0-14.14
- linux-aws Ubuntu 22.04 LTS 5.15.0-1103.110
- linux-aws Ubuntu 24.04 LTS 6.8.0-1050.53
- linux-aws Ubuntu 25.10 6.17.0-1007.7
- linux-gcp Ubuntu 22.04 LTS 5.15.0-1103.112
- linux-gcp Ubuntu 24.04 LTS 6.8.0-1052.55
ubuntu advisories UBUNTU-CVE-2025-68177
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- git.kernel.org/stable/c/b02352dd2e6cca98777714cc2a27553191df70db commit
- git.kernel.org/stable/c/956b56d17a89775e4957bbddefa45cd3c6c71000 commit
- git.kernel.org/stable/c/55cf586b9556863e3c2a45460aba71bcb2be5bcd commit
- git.kernel.org/stable/c/fd93e1d71b3b14443092919be12b1abf08de35eb commit
- git.kernel.org/stable/c/8d6791c480f22d6e9a566eaa77336d3d37c5c591 commit
- git.kernel.org/stable/c/64adabb6d9d51b7e7c02fe733346a2c4dd738488 commit
- git.kernel.org/stable/c/809cf2a7794ca4c14c304b349f4c3ae220701ce4 commit
- git.kernel.org/stable/c/592532a77b736b5153e0c2e4c74aa50af0a352ab commit
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2025-68177 updated
kernel: cpufreq/longhaul: handle NULL policy in longhaul_exit
-
Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more Red Hat Enterprise Linux 9 rv, perf, rtla, kernel, bpftool, libperf, +83 more Red Hat Enterprise Linux 10 kernelnot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Exploit prediction
0.21% chance of exploitation in the next 30 days, higher than 11% of all scored CVEs (FIRST EPSS, 2026-11-08).
Affected products
- Linux Linux
Classification
- Technology feeds
References
- git.kernel.org /stable/c/b02352dd2e6cca98777714cc2a27553191df70db
- git.kernel.org /stable/c/956b56d17a89775e4957bbddefa45cd3c6c71000
- git.kernel.org /stable/c/55cf586b9556863e3c2a45460aba71bcb2be5bcd
- git.kernel.org /stable/c/fd93e1d71b3b14443092919be12b1abf08de35eb
- git.kernel.org /stable/c/8d6791c480f22d6e9a566eaa77336d3d37c5c591
- git.kernel.org /stable/c/64adabb6d9d51b7e7c02fe733346a2c4dd738488
- git.kernel.org /stable/c/809cf2a7794ca4c14c304b349f4c3ae220701ce4
- git.kernel.org /stable/c/592532a77b736b5153e0c2e4c74aa50af0a352ab
Sources
- CVE List CVE-2025-68177
- NVD CVE-2025-68177
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.