CVE-2024-50156

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Source
https://cve.org/CVERecord?id=CVE-2024-50156
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-50156.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2024-50156
Downstream
Related
Published
2024-11-07T09:31:33.018Z
Modified
2026-03-20T12:39:36.234198Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
drm/msm: Avoid NULL dereference in msm_disp_state_print_regs()
Details

In the Linux kernel, the following vulnerability has been resolved:

drm/msm: Avoid NULL dereference in msmdispstateprintregs()

If the allocation in msmdispstatedumpregs() failed then block->state can be NULL. The msmdispstateprintregs() function does have code to try to handle it with:

if (*reg) dump_addr = *reg;

...but since "dump_addr" is initialized to NULL the above is actually a noop. The code then goes on to dereference dump_addr.

Make the function print "Registers not stored" when it sees a NULL to solve this. Since we're touching the code, fix msmdispstateprintregs() not to pointlessly take a double-pointer and properly mark the pointer as const.

Patchwork: https://patchwork.freedesktop.org/patch/619657/

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/50xxx/CVE-2024-50156.json",
    "cna_assigner": "Linux"
}
References

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
Introduced
98659487b845c05b6bed85d881713545db674c7c
Fixed
42cf045086feae77b212f0f66e742b91a5b566b7
Fixed
e8e9f2a12a6214080c8ea83220a596f6e1dedc6c
Fixed
f7ad916273483748582d97cfa31054ccb19224f3
Fixed
563aa81fd66a4e7e6e551a0e02bcc23957cafe2f
Fixed
293f53263266bc4340d777268ab4328a97f041fa

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-50156.json"