CVE-2026-43493

EUVD-2026-30884
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 42%
Affected Products (NVD)
VendorProductVersion
linuxlinux_kernel
2.6.34 ≤
𝑥
< 5.10.258
linuxlinux_kernel
5.11 ≤
𝑥
< 5.15.209
linuxlinux_kernel
5.16 ≤
𝑥
< 6.1.175
linuxlinux_kernel
6.2 ≤
𝑥
< 6.6.140
linuxlinux_kernel
6.7 ≤
𝑥
< 6.12.86
linuxlinux_kernel
6.13 ≤
𝑥
< 6.18.27
linuxlinux_kernel
6.19 ≤
𝑥
< 7.0.4
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
linux
bookworm
vulnerable
bookworm (security)
6.1.176-1
fixed
bullseye
vulnerable
bullseye (security)
5.10.259-1
fixed
forky
7.0.13-1
fixed
sid
7.0.14-1
fixed
trixie
6.12.86-1
fixed
trixie (security)
6.12.94-1
fixed
Amazon Linux logo
Amazon Linux Releases
Amazon Package
Release
bpftool
Amazon Linux 2023
1:6.1.175-219.357.amzn2023
fixed
bpftool-debuginfo
Amazon Linux 2023
1:6.1.175-219.357.amzn2023
fixed
bpftool6.12
Amazon Linux 2023
1:6.12.88-119.157.amzn2023
fixed
bpftool6.12-debuginfo
Amazon Linux 2023
1:6.12.88-119.157.amzn2023
fixed
bpftool6.18
Amazon Linux 2023
1:6.18.30-61.116.amzn2023
fixed
bpftool6.18-debuginfo
Amazon Linux 2023
1:6.18.30-61.116.amzn2023
fixed
kernel
Amazon Linux 2023
1:6.1.175-219.357.amzn2023
fixed
kernel-debuginfo
Amazon Linux 2023
1:6.1.175-219.357.amzn2023
fixed
kernel-debuginfo-common-aarch64
Amazon Linux 2023
1:6.1.175-219.357.amzn2023
fixed
kernel-debuginfo-common-x86_64
Amazon Linux 2023
1:6.1.175-219.357.amzn2023
fixed
kernel-devel
Amazon Linux 2023
1:6.1.175-219.357.amzn2023
fixed
kernel-headers
Amazon Linux 2023
1:6.1.175-219.357.amzn2023
fixed
kernel-livepatch-6.1.175-219.357
Amazon Linux 2023
1:1.0-0.amzn2023
fixed
kernel-livepatch-6.12.88-119.157
Amazon Linux 2023
1:1.0-0.amzn2023
fixed
kernel-livepatch-6.18.30-61.116
Amazon Linux 2023
1:1.0-0.amzn2023
fixed
kernel-modules-extra
Amazon Linux 2023
1:6.1.175-219.357.amzn2023
fixed
kernel-modules-extra-common
Amazon Linux 2023
1:6.1.175-219.357.amzn2023
fixed
kernel-tools
Amazon Linux 2023
1:6.1.175-219.357.amzn2023
fixed
kernel-tools-debuginfo
Amazon Linux 2023
1:6.1.175-219.357.amzn2023
fixed
kernel-tools-devel
Amazon Linux 2023
1:6.1.175-219.357.amzn2023
fixed
kernel6.12
Amazon Linux 2023
1:6.12.88-119.157.amzn2023
fixed
kernel6.12-debuginfo
Amazon Linux 2023
1:6.12.88-119.157.amzn2023
fixed
kernel6.12-debuginfo-common-aarch64
Amazon Linux 2023
1:6.12.88-119.157.amzn2023
fixed
kernel6.12-debuginfo-common-x86_64
Amazon Linux 2023
1:6.12.88-119.157.amzn2023
fixed
kernel6.12-devel
Amazon Linux 2023
1:6.12.88-119.157.amzn2023
fixed
kernel6.12-headers
Amazon Linux 2023
1:6.12.88-119.157.amzn2023
fixed
kernel6.12-modules-extra
Amazon Linux 2023
1:6.12.88-119.157.amzn2023
fixed
kernel6.12-modules-extra-common
Amazon Linux 2023
1:6.12.88-119.157.amzn2023
fixed
kernel6.12-tools
Amazon Linux 2023
1:6.12.88-119.157.amzn2023
fixed
kernel6.12-tools-debuginfo
Amazon Linux 2023
1:6.12.88-119.157.amzn2023
fixed
kernel6.12-tools-devel
Amazon Linux 2023
1:6.12.88-119.157.amzn2023
fixed
kernel6.18
Amazon Linux 2023
1:6.18.30-61.116.amzn2023
fixed
kernel6.18-debuginfo
Amazon Linux 2023
1:6.18.30-61.116.amzn2023
fixed
kernel6.18-debuginfo-common-aarch64
Amazon Linux 2023
1:6.18.30-61.116.amzn2023
fixed
kernel6.18-debuginfo-common-x86_64
Amazon Linux 2023
1:6.18.30-61.116.amzn2023
fixed
kernel6.18-devel
Amazon Linux 2023
1:6.18.30-61.116.amzn2023
fixed
kernel6.18-headers
Amazon Linux 2023
1:6.18.30-61.116.amzn2023
fixed
kernel6.18-modules-extra
Amazon Linux 2023
1:6.18.30-61.116.amzn2023
fixed
kernel6.18-modules-extra-common
Amazon Linux 2023
1:6.18.30-61.116.amzn2023
fixed
kernel6.18-tools
Amazon Linux 2023
1:6.18.30-61.116.amzn2023
fixed
kernel6.18-tools-debuginfo
Amazon Linux 2023
1:6.18.30-61.116.amzn2023
fixed
kernel6.18-tools-devel
Amazon Linux 2023
1:6.18.30-61.116.amzn2023
fixed
perf
Amazon Linux 2023
1:6.1.175-219.357.amzn2023
fixed
perf-debuginfo
Amazon Linux 2023
1:6.1.175-219.357.amzn2023
fixed
perf6.12
Amazon Linux 2023
1:6.12.88-119.157.amzn2023
fixed
perf6.12-debuginfo
Amazon Linux 2023
1:6.12.88-119.157.amzn2023
fixed
perf6.18
Amazon Linux 2023
1:6.18.30-61.116.amzn2023
fixed
perf6.18-debuginfo
Amazon Linux 2023
1:6.18.30-61.116.amzn2023
fixed
python3-perf
Amazon Linux 2023
1:6.1.175-219.357.amzn2023
fixed
python3-perf-debuginfo
Amazon Linux 2023
1:6.1.175-219.357.amzn2023
fixed
python3-perf6.12
Amazon Linux 2023
1:6.12.88-119.157.amzn2023
fixed
python3-perf6.12-debuginfo
Amazon Linux 2023
1:6.12.88-119.157.amzn2023
fixed
python3-perf6.18
Amazon Linux 2023
1:6.18.30-61.116.amzn2023
fixed
python3-perf6.18-debuginfo
Amazon Linux 2023
1:6.18.30-61.116.amzn2023
fixed
Vulnerability Media Exposure
References
https://git.kernel.org/stable/c/1d7f07df450bac3301938fbc4251f2611be4084e
https://git.kernel.org/stable/c/46271895ddfb1ba41f89f7e0dffbe9c2bcf7380a
https://git.kernel.org/stable/c/76641449b28979ebd6c02e9598367e119e385236
https://git.kernel.org/stable/c/77d55bc8675ee851ed639dc9be77325a8024cf67
https://git.kernel.org/stable/c/915b692e6cb723aac658c25eb82c58fd81235110
https://git.kernel.org/stable/c/9f1cbca178c03188e201ed175251372149bb25f2
https://git.kernel.org/stable/c/ae7e95638d956d556d74b9abb9e780d3bd3dcd9e
https://git.kernel.org/stable/c/eb34e243df57e32f4c08fa191f3602ea19076276