CVE-2026-43055

linux: In the Linux kernel, the following vulnerability has been resolved: scsi: target: file: Use kzalloc_flex for aio_cmd...

CVE-2026-43055 is fixed in 19 products on 1 platform, first by DEBIAN-CVE-2026-43055, released May 15, 2026. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
7.5
high
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0036
29th percentile

In the Linux kernel, the following vulnerability has been resolved: scsi: target: file: Use kzalloc_flex for aio_cmd The target_core_file doesn't initialize the aio_cmd->iocb for the ki_write_stream. When a write command fd_execute_rw_aio() is executed, we may get a bogus ki_write_stream value, causing unintended write failure status when checking iocb->ki_write_stream > max_write_streams in the block device. Let's just use kzalloc_flex when allocating the aio_cmd and let ki_write_stream=0 to fix this issue.

Where it's fixed

ProductFixed inFixReleased
Linux
bpftool6.18 · amzn 2023 1:6.18.25-52.107.amzn2023 ALAS2023-2026-1746 May 25, 2026
bpftool6.18-debuginfo · amzn 2023 1:6.18.25-52.107.amzn2023 ALAS2023-2026-1746 May 25, 2026
kernel-livepatch-6.18.25-52.107 · amzn 2023 1:1.0-0.amzn2023 ALAS2023-2026-1746 May 25, 2026
kernel6.18 · amzn 2023 1:6.18.25-52.107.amzn2023 ALAS2023-2026-1746 May 25, 2026
kernel6.18-debuginfo · amzn 2023 1:6.18.25-52.107.amzn2023 ALAS2023-2026-1746 May 25, 2026
kernel6.18-debuginfo-common-aarch64 · amzn 2023 1:6.18.25-52.107.amzn2023 ALAS2023-2026-1746 May 25, 2026
kernel6.18-debuginfo-common-x86_64 · amzn 2023 1:6.18.25-52.107.amzn2023 ALAS2023-2026-1746 May 25, 2026
kernel6.18-devel · amzn 2023 1:6.18.25-52.107.amzn2023 ALAS2023-2026-1746 May 25, 2026
kernel6.18-headers · amzn 2023 1:6.18.25-52.107.amzn2023 ALAS2023-2026-1746 May 25, 2026
kernel6.18-modules-extra · amzn 2023 1:6.18.25-52.107.amzn2023 ALAS2023-2026-1746 May 25, 2026
kernel6.18-modules-extra-common · amzn 2023 1:6.18.25-52.107.amzn2023 ALAS2023-2026-1746 May 25, 2026
kernel6.18-tools · amzn 2023 1:6.18.25-52.107.amzn2023 ALAS2023-2026-1746 May 25, 2026
kernel6.18-tools-debuginfo · amzn 2023 1:6.18.25-52.107.amzn2023 ALAS2023-2026-1746 May 25, 2026
kernel6.18-tools-devel · amzn 2023 1:6.18.25-52.107.amzn2023 ALAS2023-2026-1746 May 25, 2026
linux · Debian 14 6.19.12-1 DEBIAN-CVE-2026-43055 May 15, 2026
perf6.18 · amzn 2023 1:6.18.25-52.107.amzn2023 ALAS2023-2026-1746 May 25, 2026
perf6.18-debuginfo · amzn 2023 1:6.18.25-52.107.amzn2023 ALAS2023-2026-1746 May 25, 2026
python3-perf6.18 · amzn 2023 1:6.18.25-52.107.amzn2023 ALAS2023-2026-1746 May 25, 2026
python3-perf6.18-debuginfo · amzn 2023 1:6.18.25-52.107.amzn2023 ALAS2023-2026-1746 May 25, 2026

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