CVE-2026-97980
s390/debug: Fix NULL pointer dereference in debug_set_level()
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 7.2.7
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
In the Linux kernel, the following vulnerability has been resolved: s390/debug: Fix NULL pointer dereference in debug_set_level() Commit a2cec6863709 ("s390/debug: Add s390dbf kernel parameter") incorrectly removed a null-id check from debug_set_level(), introducing a possible NULL pointer dereference for debug-API users that put debug_register() results unchecked into debug_set_level(). Fix this by moving the check from the internal _debug_set_level() variant back to the external debug_set_level() wrapper.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
From a2cec6863709d6673a025acc066c962b85a75842 · fixed in 716e1cd3783806929407dbd596e6b1118971eb9e; From a2cec6863709d6673a025acc066c962b85a75842 · fixed in b1eb31d533cdfcae1011ed53850d52f36afe5774
- Linux Linux
7.2
- KernelLinux
From 7.2.0 · fixed in 7.2.7