CVE-2021-43267: fedoraproject fedora
Vulnerability summary
CVE-2021-43267 is a critical (CVSS 9.8) vulnerability in fedoraproject fedora. EPSS estimates a 57.85% chance of exploitation in the next 30 days, higher than 99% of scored vulnerabilities. 1 public exploit is recorded.
Public exploit (reference, Date unknown)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 11 · Related 4Timeline
- 02-11-2021PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
An issue was discovered in net/tipc/crypto.c in the Linux kernel before 5.14.16. The Transparent Inter-Process Communication (TIPC) functionality allows remote attackers to exploit insufficient validation of user-supplied sizes for the MSG_CRYPTO message type.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · Red hatEcosystem advisory · calculated8.8HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HDiffers
- 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 · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
57.85%
Chance of exploitation in the next 30 days
Percentile
99%
Versus all other CVEs
30-day change
No change 0.00 pp
From 57.85% 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
1 foundExploit Reference (openwall.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu32 products
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11< 5.11.0-1023.24~20.04.1
- linux-aws-5.3All versions (No fix recorded)
- linux-aws-5.8All versions (No fix recorded)
- linux-azureAll versions (No fix recorded)
Redhat27 products
- kpatch-patch-4_18_0-305< 0:1-8.el8
- kpatch-patch-4_18_0-305_10_2< 0:1-5.el8_4
- kpatch-patch-4_18_0-305_10_2-debuginfo< 0:1-5.el8_4
- kpatch-patch-4_18_0-305_10_2-debugsource< 0:1-5.el8_4
- kpatch-patch-4_18_0-305_12_1< 0:1-4.el8_4
Debian1 product
- linux< 5.14.16-1
Fedoraproject1 product
- fedoraEOL34 | 35
Linux1 product
- linux_kernel≥ 5.10, < 5.10.77 | ≥ 5.11, < 5.14.16
6 vendors · 69 products
References
23 links- github.com/torvalds/linux/commit/fa40d9734a57bcbfa79a280189799f76c88f7bb0X Refsource MISCREPORTPatchThird Party Advisory
- cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.16X Refsource MISCREPORTMailing ListRelease NotesVendor Advisory
- www.openwall.com/lists/oss-security/2022/02/10/1Mailing ListX Refsource MLISTExploitThird Party Advisory
