CVE-2022-49288

Summary

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

ALSA: pcm: Fix races among concurrent prealloc proc writes

We have no protection against concurrent PCM buffer preallocation changes via proc files, and it may potentially lead to UAF or some weird problem. This patch applies the PCM open_mutex to the proc write operation for avoiding the racy proc writes and the PCM stream open (and further operations).

Affected Software

VendorProductVersion RangeStatus
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < e7786c445bb67a9a6e64f66ebd6b7215b153ff7daffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < e14dca613e0a6ddc2bf6e360f16936a9f865205baffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 37b12c16beb6f6c1c3c678c1aacbc46525c250f7affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < b560d670c87d7d40b3cf6949246fa4c7aa65a00aaffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 51fce708ab8986a9879ee5da946a2cc120f1036daffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < a21d2f323b5a978dedf9ff1d50f101f85e39b3f2affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 5ed8f8e3c4e59d0396b9ccf2e639711e24295bb6affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 69534c48ba8ce552ce383b3dfdb271ffe51820c3affected
LinuxLinux2.6.12affected
LinuxLinux0 < 2.6.12unaffected
LinuxLinux4.14.279 <= 4.14.*unaffected
LinuxLinux4.19.243 <= 4.19.*unaffected
LinuxLinux5.4.193 <= 5.4.*unaffected
LinuxLinux5.10.109 <= 5.10.*unaffected
LinuxLinux5.15.32 <= 5.15.*unaffected
LinuxLinux5.16.18 <= 5.16.*unaffected
LinuxLinux5.17.1 <= 5.17.*unaffected
LinuxLinux5.18 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: total

References