Zero Day MonitorZDM
DashboardVulnerabilitiesTrendingZero-DaysNewsAbout
Login
ImpressumPrivacy Policy
Zero Day Monitor © 2026
2076 articles · 154829 vulns · 36/41 feeds (7d)
← Back to list
9.8
CVE-2026-43493EXPLOITEDPATCHED
linux · linux kernel

crypto: pcrypt - Fix handling of MAY_BACKLOG requests

Description

In the Linux kernel, the following vulnerability has been resolved: crypto: pcrypt - Fix handling of MAY_BACKLOG requests MAY_BACKLOG requests can return EBUSY. Handle them by checking for that value and filtering out EINPROGRESS notifications.

Affected Products

VendorProductVersions
linuxlinux kernel5a1436beec5744029f3ac90b6fe71a698dcd6155, 5a1436beec5744029f3ac90b6fe71a698dcd6155, 5a1436beec5744029f3ac90b6fe71a698dcd6155, 5a1436beec5744029f3ac90b6fe71a698dcd6155, 5a1436beec5744029f3ac90b6fe71a698dcd6155, 2.6.34

Also Affects

Downstream vendors/products affected by this vulnerability

VendorProductSourceConfidence
linuxlinuxmitre_affected90%
open sourceopen source linux kernelcert_advisory90%

References

  • https://git.kernel.org/stable/c/9f1cbca178c03188e201ed175251372149bb25f2
  • https://git.kernel.org/stable/c/eb34e243df57e32f4c08fa191f3602ea19076276
  • https://git.kernel.org/stable/c/77d55bc8675ee851ed639dc9be77325a8024cf67
  • https://git.kernel.org/stable/c/46271895ddfb1ba41f89f7e0dffbe9c2bcf7380a
  • https://git.kernel.org/stable/c/915b692e6cb723aac658c25eb82c58fd81235110

Related News (4 articles)

Tier A
Microsoft MSRC1d ago
CVE-2026-43493 crypto: pcrypt - Fix handling of MAY_BACKLOG requests
→ No new info (linked only)
Tier C
VulDB1d ago
CVE-2026-43493 | Linux Kernel up to 6.6.139/6.12.85/6.18.26/7.0.3 privilege escalation
→ No new info (linked only)
Tier B
BSI Advisories1d ago
[NEU] [niedrig] Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service
→ No new info (linked only)
Tier C
Linux Kernel CVEs2d ago
CVE-2026-43493: crypto: pcrypt - Fix handling of MAY_BACKLOG requests
→ No new info (linked only)
CVSS 3.19.8 CRITICAL
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA KEV❌ No
Actively exploited✅ Yes
Patch available
9f1cbca178c03188e201ed175251372149bb25f2eb34e243df57e32f4c08fa191f3602ea1907627677d55bc8675ee851ed639dc9be77325a8024cf6746271895ddfb1ba41f89f7e0dffbe9c2bcf7380a915b692e6cb723aac658c25eb82c58fd8123511006.6.1406.12.866.18.277.0.47.1-rc1
PublishedMay 19, 2026
Last enriched1d agov3
Trending Score59
Source articles4
Independent4
Info Completeness7/14
Missing: cvss, epss, cwe, kev, exploit, iocs, mitre_attack

Community Vote

0
Login to vote
0 upvotes0 downvotes
No votes yet

Related CVEs (5)

HIGHCVE-2026-31431EXPKEV
crypto: algif_aead - Revert to operating out-of-place
Trending: 142
HIGHCVE-2026-43284EXPKEV
xfrm: esp: avoid in-place decrypt on shared skb frags
Trending: 140
CRITICALCVE-2026-43500EXPKEV
rxrpc: Also unshare DATA/RESPONSE packets when paged frags are present
Trending: 131
HIGHCVE-2026-46333EXP
ptrace: slightly saner 'get_dumpable()' logic
Trending: 90
CRITICALCVE-2026-31702EXP
f2fs: fix use-after-free of sbi in f2fs_compress_write_end_io()
Trending: 49

Pin to Dashboard

Verification

State: verified
Confidence: 0%

Vulnerability Timeline

CVE Published
May 19, 2026
Discovered by ZDM
May 19, 2026
Updated: affectedVersions
May 19, 2026
Updated: affectedVersions, severity
May 19, 2026
Actively Exploited
May 20, 2026
Exploit Available
May 20, 2026
Patch Available
May 20, 2026

Version History

v3
Last enriched 1d ago
v3Tier C1d ago

Updated affected versions to include 6.6.139, 6.12.85, 6.18.26, 7.0.3 and changed severity to CRITICAL.

affectedVersionsseverity
via VulDB
v2Tier C2d ago

Added CVE-2026-43493, updated description, and included affected version 2.6.34.

affectedVersions
via Linux Kernel CVEs
v12d ago

Initial creation