CVE-2022-50012
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2022-50012
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50012.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2022-50012
- Downstream
- Related
- Published
- 2025-06-18T11:01:16.857Z
- Modified
- 2025-12-23T21:01:53.295567Z
- Summary
- powerpc/64: Init jump labels before parse_early_param()
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
powerpc/64: Init jump labels before parseearlyparam()
On 64-bit, calling jumplabelinit() in setupfeaturekeys() is too late because static keys may be used in subroutines of parseearlyparam() which is again subroutine of earlyinitdevtree().
For example booting with "threadirqs":
statickeyenablecpuslocked(): static key '0xc000000002953260' used before call to jumplabelinit() WARNING: CPU: 0 PID: 0 at kernel/jumplabel.c:166 statickeyenablecpuslocked+0xfc/0x120 ... NIP statickeyenablecpuslocked+0xfc/0x120 LR statickeyenablecpuslocked+0xf8/0x120 Call Trace: statickeyenablecpuslocked+0xf8/0x120 (unreliable) statickeyenable+0x30/0x50 setupforcedirqthreads+0x28/0x40 doearlyparam+0xa0/0x108 parseargs+0x290/0x4e0 parseearlyoptions+0x48/0x5c parseearlyparam+0x58/0x84 earlyinitdevtree+0xd4/0x518 earlysetup+0xb4/0x214
So call jumplabelinit() just before parseearlyparam() in earlyinitdevtree().
[mpe: Add call trace to change log and minor wording edits.]
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50012.json" }- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/8f9357313cdcadb0a311b44c29d4eaccc7fa632f
- https://git.kernel.org/stable/c/ca829e05d3d4f728810cc5e4b468d9ebc7745eb3
- https://git.kernel.org/stable/c/e3c9e9452a8ea12d335b1e59b2c72e1b99c699b8
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50012.json
- https://nvd.nist.gov/vuln/detail/CVE-2022-50012
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced91cc470e797828d779cd4c1efbe8519bcb358baeFixede3c9e9452a8ea12d335b1e59b2c72e1b99c699b8Fixed8f9357313cdcadb0a311b44c29d4eaccc7fa632fFixedca829e05d3d4f728810cc5e4b468d9ebc7745eb3