CVE-2023-52774

Summary

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

s390/dasd: protect device queue against concurrent access

In dasd_profile_start() the amount of requests on the device queue are counted. The access to the device queue is unprotected against concurrent access. With a lot of parallel I/O, especially with alias devices enabled, the device queue can change while dasd_profile_start() is accessing the queue. In the worst case this leads to a kernel panic due to incorrect pointer accesses.

Fix this by taking the device lock before accessing the queue and counting the requests. Additionally the check for a valid profile data pointer can be done earlier to avoid unnecessary locking in a hot path.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux4fa52aa7a82f9226b3874a69816bda3af821f002 < ebdc569a07a3e8dbe66b4184922ad6f88ac0b96faffected
LinuxLinux4fa52aa7a82f9226b3874a69816bda3af821f002 < f75617cc8df4155374132f0b500b0b3ebb967458affected
LinuxLinux4fa52aa7a82f9226b3874a69816bda3af821f002 < f1ac7789406e2ca9ac51c41ad2daa597f47bdd4daffected
LinuxLinux4fa52aa7a82f9226b3874a69816bda3af821f002 < c841de6247e94e07566d57163d3c0d8b29278f7aaffected
LinuxLinux4fa52aa7a82f9226b3874a69816bda3af821f002 < 6062c527d0403cef27c54b91ac8390c3a497b250affected
LinuxLinux4fa52aa7a82f9226b3874a69816bda3af821f002 < dc96fde8fcb2b896fd6c64802a7f4ece2e69b0beaffected
LinuxLinux4fa52aa7a82f9226b3874a69816bda3af821f002 < 9372aab5d0ff621ea203c8c603e7e5f75e888240affected
LinuxLinux4fa52aa7a82f9226b3874a69816bda3af821f002 < db46cd1e0426f52999d50fa72cfa97fa39952885affected
LinuxLinux3.1affected
LinuxLinux0 < 3.1unaffected
LinuxLinux4.14.332 <= 4.14.*unaffected
LinuxLinux4.19.301 <= 4.19.*unaffected
LinuxLinux5.4.263 <= 5.4.*unaffected
LinuxLinux5.10.203 <= 5.10.*unaffected
LinuxLinux5.15.141 <= 5.15.*unaffected
LinuxLinux6.1.65 <= 6.1.*unaffected
LinuxLinux6.6.4 <= 6.6.*unaffected
LinuxLinux6.7 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

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

References