CVE-2023-53511 — Missing Release of Memory after Effective Lifetime in Linux

CWE-401 — Missing Release of Memory after Effective Lifetime CWE-772 — Missing Release of Resource after Effective Lifetime5 documents5 sources

Severity

5.5MEDIUMNVD

EPSS

0.0%

top 97.71%

CISA KEV

Not in KEV

Exploit

No known exploits

Affected products

Linux Linux Kernel Debian Linux

Timeline

PublishedOct 1

Description

In the Linux kernel, the following vulnerability has been resolved: io_uring: fix fget leak when fs don't support nowait buffered read Heming reported a BUG when using io_uring doing link-cp on ocfs2. [1] Do the following steps can reproduce this BUG: mount -t ocfs2 /dev/vdc /mnt/ocfs2 cp testfile /mnt/ocfs2/ ./link-cp /mnt/ocfs2/testfile /mnt/ocfs2/testfile.1 umount /mnt/ocfs2 Then umount will fail, and it outputs: umount: /mnt/ocfs2: target is busy. While tracing umount, it blames mnt_get…

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages4 packages

▶NVDlinux/linux_kernel5.17.9 — 5.18+3

▶Debianlinux/linux_kernel< 6.1.20-1+2

▶CVEListV5linux/linuxa196c78b5443fc61af2c0490213b9d125482cbd1 — 75a499fc9d66a32271e2b3e4ca71156e8ad3b484+4

▶debiandebian/linux< linux 6.1.20-1 (bookworm)

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

OSV

CVE-2023-53511: In the Linux kernel, the following vulnerability has been resolved: io_uring: fix fget leak when fs don't support nowait buffered read Heming reported↗2025-10-01

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GHSA

GHSA-m97q-c3xf-55xf: In the Linux kernel, the following vulnerability has been resolved: io_uring: fix fget leak when fs don't support nowait buffered read Heming report↗2025-10-01

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📋Vendor Advisories

Red Hat

kernel: Linux kernel: Denial of Service due to file descriptor leak in io_uring with ocfs2↗2025-10-01

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Debian

CVE-2023-53511: linux - In the Linux kernel, the following vulnerability has been resolved: io_uring: f...↗2023

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