CVE-2023-52774: s390/dasd: protect device queue against concurrent access
Vulnerability summary
CVE-2023-52774 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 15.1% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 13 · Related 13Timeline
- 21-05-2024PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
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.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.24%
Chance of exploitation in the next 30 days
Percentile
15%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.24% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu116 products
- linuxAll versions (No fix recorded) | < 5.4.0-173.191 | < 5.15.0-100.110
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 5.4.0-1120.130 | < 5.15.0-1056.61
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 4fa52aa7a82f9226b3874a69816bda3af821f002, < ebdc569a07a3e8dbe66b4184922ad6f88ac0b96f | ≥ 4fa52aa7a82f9226b3874a69816bda3af821f002, < f75617cc8df4155374132f0b500b0b3ebb967458 | ≥ 4fa52aa7a82f9226b3874a69816bda3af821f002, < f1ac7789406e2ca9ac51c41ad2daa597f47bdd4d | ≥ 4fa52aa7a82f9226b3874a69816bda3af821f002, < c841de6247e94e07566d57163d3c0d8b29278f7a | ≥ 4fa52aa7a82f9226b3874a69816bda3af821f002, < 6062c527d0403cef27c54b91ac8390c3a497b250 | ≥ 4fa52aa7a82f9226b3874a69816bda3af821f002, < dc96fde8fcb2b896fd6c64802a7f4ece2e69b0be | ≥ 4fa52aa7a82f9226b3874a69816bda3af821f002, < 9372aab5d0ff621ea203c8c603e7e5f75e888240 | ≥ 4fa52aa7a82f9226b3874a69816bda3af821f002, < db46cd1e0426f52999d50fa72cfa97fa39952885 | 3.1
- linux_kernel≥ 3.1, < 4.14.332 | ≥ 4.15, < 4.19.301 | ≥ 4.20, < 5.4.263 | ≥ 5.5, < 5.10.203 | ≥ 5.11, < 5.15.141 | ≥ 5.16, < 6.1.65 | ≥ 6.2, < 6.6.4 | 6.7:rc1 | 6.7:rc2
Debian1 product
- linux< 6.1.66-1 | < 6.6.8-1
3 vendors · 119 products
