CVE-2023-52672: pipe: wakeup wr_wait after setting max_usage
Vulnerability summary
CVE-2023-52672 is a high (CVSS 7.0) Uncontrolled Resource Consumption vulnerability in debian debian_linux. EPSS estimates a 0.26% chance of exploitation in the next 30 days, higher than 17.1% of scored vulnerabilities.
Not severe (CVSS 7, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 16 · Related 16Timeline
- 17-05-2024PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: pipe: wakeup wr_wait after setting max_usage Commit c73be61cede5 ("pipe: Add general notification queue support") a regression was introduced that would lock up resized pipes under certain conditions. See the reproducer in [1]. The commit resizing the pipe ring size was moved to a different function, doing that moved the wakeup for pipe->wr_wait before actually raising pipe->max_usage. If a pipe was full before the resize occured it would result in the wakeup never actually triggering pipe_write. Set @max_usage and @nr_accounted before waking writers if this isn't a watch queue. [Christian Brauner <brauner@kernel.org>: rewrite to account for watch queues]
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HDiffers
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HDiffers
- NVDNIST5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HDiffers
EPSS trend
Probability
0.26%
Chance of exploitation in the next 30 days
Percentile
17%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.26% 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.
Ubuntu104 products
- linux< 5.15.0-106.116
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.15.0-1061.67
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Debian2 products
- linux< 6.1.76-1 | < 6.6.15-1
- debian_linuxEOL10.0
Linux2 products
- linux≥ c73be61cede5882f9605a852414db559c0ebedfd, < 162ae0e78bdabf84ef10c1293c4ed7865cb7d3c8 | ≥ c73be61cede5882f9605a852414db559c0ebedfd, < 3efbd114b91525bb095b8ae046382197d92126b9 | ≥ c73be61cede5882f9605a852414db559c0ebedfd, < b87a1229d8668fbc78ebd9ca0fc797a76001c60f | ≥ c73be61cede5882f9605a852414db559c0ebedfd, < 68e51bdb1194f11d3452525b99c98aff6f837b24 | ≥ c73be61cede5882f9605a852414db559c0ebedfd, < 6fb70694f8d1ac34e45246b0ac988f025e1e5b55 | ≥ c73be61cede5882f9605a852414db559c0ebedfd, < e95aada4cb93d42e25c30a0ef9eb2923d9711d4a | 5.8
- linux_kernel≥ 5.8, < 5.10.210 | ≥ 5.11, < 5.15.149 | ≥ 5.16, < 6.1.76 | ≥ 6.2, < 6.6.15 | ≥ 6.7, < 6.7.3
3 vendors · 108 products
