CVE-2023-52654: io_uring/af_unix: disable sending io_uring over sockets
Vulnerability summary
CVE-2023-52654 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.89% chance of exploitation in the next 30 days, higher than 59.4% of scored vulnerabilities.
Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 14 · Related 14Timeline
- 09-05-2024PublishedVulnerability first disclosed.
- 05-08-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: io_uring/af_unix: disable sending io_uring over sockets File reference cycles have caused lots of problems for io_uring in the past, and it still doesn't work exactly right and races with unix_stream_read_generic(). The safest fix would be to completely disallow sending io_uring files via sockets via SCM_RIGHT, so there are no possible cycles invloving registered files and thus rendering SCM accounting on the io_uring side unnecessary.
CVSS metrics
4 scores · 4 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated4.7MediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:HDiffers
- NVDNIST4.7MediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:HDiffers
EPSS trend
Probability
0.89%
Chance of exploitation in the next 30 days
Percentile
59%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.89% 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 causeNo weakness data has been published for this record.
Affected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu73 products
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
- linux-aws-5.13All versions (No fix recorded)
- linux-aws-5.19All versions (No fix recorded)
Linux2 products
- linux≥ 04df9719df1865f6770af9bc7880874af0e594b2, < 18824f592aad4124d79751bbc1500ea86ac3ff29 | ≥ c378c479c5175833bb22ff71974cda47d7b05401, < 3fe1ea5f921bf5b71cbfdc4469fb96c05936610e | ≥ 813d8fe5d30388f73a21d3a2bf46b0a1fd72498c, < bcedd497b3b4a0be56f3adf7c7542720eced0792 | ≥ 0091bfc81741b8d3aeb3b7ab8636f911b2de6e80, < f2f57f51b53be153a522300454ddb3887722fb2c | ≥ 0091bfc81741b8d3aeb3b7ab8636f911b2de6e80, < 5a33d385eb36991a91e3dddb189d8679e2aac2be | ≥ 0091bfc81741b8d3aeb3b7ab8636f911b2de6e80, < 705318a99a138c29a512a72c3e0043b3cd7f55f4 | b4293c01ee0d0ecdd3cb5801e13f62271144667a | 75e94c7e8859e58aadc15a98cc9704edff47d4f2 | ≥ 5.4.220, < 5.4.264 | ≥ 5.10.150, < 5.10.204 | ≥ 5.15.75, < 5.15.143 | ≥ 5.19.17, < 5.20 | ≥ 6.0.3, < 6.1 | 6.1
- linux_kernel≥ 5.4.220, < 5.4.264 | ≥ 5.10.150, < 5.10.204 | ≥ 5.15.75, < 5.15.143 | ≥ 5.19.17, < 5.20 | ≥ 6.0.3, < 6.1.68 | ≥ 6.2, < 6.6.7 | 6.7:rc1 | 6.7:rc2 | 6.7:rc3 | 6.7:rc4
Debian1 product
- linux< 6.1.69-1 | < 6.6.8-1
3 vendors · 76 products
