CVE-2024-26583: tls: fix race between async notify and socket close
Vulnerability summary
CVE-2024-26583 is a critical (CVSS 9.8) vulnerability in linux. EPSS estimates a 0.55% chance of exploitation in the next 30 days, higher than 46% of scored vulnerabilities.
Severe, CVSS 9.8 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 43 · Related 39Timeline
- 21-02-2024PublishedVulnerability first disclosed.
- 05-08-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: tls: fix race between async notify and socket close The submitting thread (one which called recvmsg/sendmsg) may exit as soon as the async crypto handler calls complete() so any code past that point risks touching already freed data. Try to avoid the locking and extra flags altogether. Have the main thread hold an extra reference, this way we can depend solely on the atomic ref counter for synchronization. Don't futz with reiniting the completion, either, we are now tightly controlling when completion fires.
CVSS metrics
4 scores · 4 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/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
0.55%
Chance of exploitation in the next 30 days
Percentile
46%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.55% 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: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu112 products
- linux< 5.4.0-190.210 | < 5.15.0-112.122
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.4.0-1129.139 | < 5.15.0-1063.69
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 0cada33241d9de205522e3858b18e506ca5cce2c, < f17d21ea73918ace8afb9c2d8e734dbf71c2c9d7 | ≥ 0cada33241d9de205522e3858b18e506ca5cce2c, < 7a3ca06d04d589deec81f56229a9a9d62352ce01 | ≥ 0cada33241d9de205522e3858b18e506ca5cce2c, < 86dc27ee36f558fe223dbdfbfcb6856247356f4a | ≥ 0cada33241d9de205522e3858b18e506ca5cce2c, < 6209319b2efdd8524691187ee99c40637558fa33 | ≥ 0cada33241d9de205522e3858b18e506ca5cce2c, < aec7961916f3f9e88766e2688992da6980f11b8d | cf4cc95a15f599560c7abd89095a7973a4b9cec3 | 9b81d43da15e56ed89f083f326561acdcaf549ce | ≥ 5.4.44, < 5.5 | ≥ 5.6.16, < 5.7 | 5.7
- linux_kernel≥ 5.7.0, < 6.1.79 | ≥ 6.2.0, < 6.6.18 | ≥ 6.7.0, < 6.7.6
Debian1 product
- linux< 6.1.82-1 | < 6.7.7-1
3 vendors · 115 products
