Riskcovery

CVE-2023-52774

s390/dasd: protect device queue against concurrent access

State
Published
Severity
Not scored
Published
May 21, 2024
Updated
May 11, 2026
Reserved
May 21, 2024

Read the record on cve.org

Description

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 4fa52aa7a82f9226b3874a69816bda3af821f002 to before ebdc569a07a3e8dbe66b4184922ad6f88ac0b96fAffected
  • 4fa52aa7a82f9226b3874a69816bda3af821f002 to before f75617cc8df4155374132f0b500b0b3ebb967458Affected
  • 4fa52aa7a82f9226b3874a69816bda3af821f002 to before f1ac7789406e2ca9ac51c41ad2daa597f47bdd4dAffected
  • 4fa52aa7a82f9226b3874a69816bda3af821f002 to before c841de6247e94e07566d57163d3c0d8b29278f7aAffected
  • 4fa52aa7a82f9226b3874a69816bda3af821f002 to before 6062c527d0403cef27c54b91ac8390c3a497b250Affected
  • 4fa52aa7a82f9226b3874a69816bda3af821f002 to before dc96fde8fcb2b896fd6c64802a7f4ece2e69b0beAffected
  • 4fa52aa7a82f9226b3874a69816bda3af821f002 to before 9372aab5d0ff621ea203c8c603e7e5f75e888240Affected
  • 4fa52aa7a82f9226b3874a69816bda3af821f002 to before db46cd1e0426f52999d50fa72cfa97fa39952885Affected
LinuxLinux
  • 3.1Affected
  • before 3.1Not affected
  • 4.14.332 through 4.14.*Not affected
  • 4.19.301 through 4.19.*Not affected
  • 5.4.263 through 5.4.*Not affected
  • 5.10.203 through 5.10.*Not affected
  • 5.15.141 through 5.15.*Not affected
  • 6.1.65 through 6.1.*Not affected
  • 6.6.4 through 6.6.*Not affected
  • 6.7 and laterNot affected

References

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