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CVE-2024-50134

drm/vboxvideo: Replace fake VLA at end of vbva_mouse_pointer_shape with real VLA

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.4.285, 5.10.229, 5.15.170, 6.1.115, 6.6.59, and 1 more
None on Exploit-DB, Metasploit or GitHub

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/vboxvideo: Replace fake VLA at end of vbva_mouse_pointer_shape with real VLA Replace the fake VLA at end of the vbva_mouse_pointer_shape shape with a real VLA to fix a "memcpy: detected field-spanning write error" warning: [ 13.319813] memcpy: detected field-spanning write (size 16896) of single field "p->data" at drivers/gpu/drm/vboxvideo/hgsmi_base.c:154 (size 4) [ 13.319841] WARNING: CPU: 0 PID: 1105 at drivers/gpu/drm/vboxvideo/hgsmi_base.c:154 hgsmi_update_pointer_shape+0x192/0x1c0 [vboxvideo] [ 13.320038] Call Trace: [ 13.320173] hgsmi_update_pointer_shape [vboxvideo] [ 13.320184] vbox_cursor_atomic_update [vboxvideo] Note as mentioned in the added comment it seems the original length calculation for the allocated and send hgsmi buffer is 4 bytes too large. Changing this is not the goal of this patch, so this behavior is kept.

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Linux Linux

    From dd55d44f408419278c00887bfcb2261d0caae350 · fixed in 02c86c5d5ef4bbba17d38859c74872825f536617; From dd55d44f408419278c00887bfcb2261d0caae350 · fixed in 75f828e944dacaac8870418461d3d48a1ecf2331; From dd55d44f408419278c00887bfcb2261d0caae350 · fixed in 34a422274b693507025a7db21519865d1862afcb; From dd55d44f408419278c00887bfcb2261d0caae350 · fixed in 7458a6cdaebb3dc59af8578ee354fae78a154c4a; From dd55d44f408419278c00887bfcb2261d0caae350 · fixed in 9eb32bd23bbcec44bcbef27b7f282b7a7f3d0391; From dd55d44f408419278c00887bfcb2261d0caae350 · fixed in fae9dc12c61ce23cf29d09824a741b7b1ff8f01f; From dd55d44f408419278c00887bfcb2261d0caae350 · fixed in d92b90f9a54d9300a6e883258e79f36dab53bfae

  • Linux Linux

    4.13

  • KernelLinux

    From 4.13.0 · fixed in 5.4.285; From 5.5.0 · fixed in 5.10.229; From 5.11.0 · fixed in 5.15.170; From 5.16.0 · fixed in 6.1.115; From 6.2.0 · fixed in 6.6.59; From 6.7.0 · fixed in 6.11.6

References 7

git.kernel.org