CVE-2024-50156 (GCVE-0-2024-50156)

Vulnerability from cvelistv5 – Published: 2024-11-07 09:31 – Updated: 2025-11-03 22:26
VLAI?
Title
drm/msm: Avoid NULL dereference in msm_disp_state_print_regs()
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/msm: Avoid NULL dereference in msm_disp_state_print_regs() If the allocation in msm_disp_state_dump_regs() failed then `block->state` can be NULL. The msm_disp_state_print_regs() 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 msm_disp_state_print_regs() not to pointlessly take a double-pointer and properly mark the pointer as `const`. Patchwork: https://patchwork.freedesktop.org/patch/619657/
Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 98659487b845c05b6bed85d881713545db674c7c , < 42cf045086feae77b212f0f66e742b91a5b566b7 (git)
Affected: 98659487b845c05b6bed85d881713545db674c7c , < e8e9f2a12a6214080c8ea83220a596f6e1dedc6c (git)
Affected: 98659487b845c05b6bed85d881713545db674c7c , < f7ad916273483748582d97cfa31054ccb19224f3 (git)
Affected: 98659487b845c05b6bed85d881713545db674c7c , < 563aa81fd66a4e7e6e551a0e02bcc23957cafe2f (git)
Affected: 98659487b845c05b6bed85d881713545db674c7c , < 293f53263266bc4340d777268ab4328a97f041fa (git)
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    Linux Linux Affected: 5.14
Unaffected: 0 , < 5.14 (semver)
Unaffected: 5.15.170 , ≤ 5.15.* (semver)
Unaffected: 6.1.115 , ≤ 6.1.* (semver)
Unaffected: 6.6.59 , ≤ 6.6.* (semver)
Unaffected: 6.11.6 , ≤ 6.11.* (semver)
Unaffected: 6.12 , ≤ * (original_commit_for_fix)
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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