s390/boot: Avoid IPL parameter append past command line
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 6.12.112, 6.18.53, 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/boot: Avoid IPL parameter append past command line A command line may occupy all but the terminating byte of COMMAND_LINE_SIZE. In that case append_ipl_block_parm() passes a zero size to the IPL parameter conversion helpers and points the destination one byte past early_command_line. The helpers subtract one from the unsigned size and write the converted parameter outside the command line buffer. Convert the IPL parameter in the command line parsing buffer first. A parameter beginning with '=' can then replace the existing command line regardless of its length, while other parameters are appended only when space remains.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
From 5ecb2da660ab8eddafe059a6a8a708465db89ca2 · fixed in af9866021a00ab9eeacf0c33ee73f3d134b4ed70; From 5ecb2da660ab8eddafe059a6a8a708465db89ca2 · fixed in 73eec5a0d55916d7e1115f5d03a7ffc06d6215cf; From 5ecb2da660ab8eddafe059a6a8a708465db89ca2 · fixed in 8d11bfec8666f8409fac9072e9c25b691d3e30ac; From 5ecb2da660ab8eddafe059a6a8a708465db89ca2 · fixed in d76181dfabdaa720703167393704efacba343442
- Linux Linux
5.16
- KernelLinux
From 5.16.0 · fixed in 6.12.112; From 6.13.0 · fixed in 6.18.53; From 6.19.0 · fixed in 7.2.7