NULL Pointer Dereference Affecting kernel-livepatch-5_14_21-150500_13_5-rt package, versions <1-150500.11.5.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.21% (12th percentile)

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  • Snyk IDSNYK-SLES155-KERNELLIVEPATCH51421150500135RT-5772185
  • published12 Jul 2023
  • disclosed11 Jul 2023

Introduced: 11 Jul 2023

CVE-2023-1583  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade SLES:15.5 kernel-livepatch-5_14_21-150500_13_5-rt to version 1-150500.11.5.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-livepatch-5_14_21-150500_13_5-rt package and not the kernel-livepatch-5_14_21-150500_13_5-rt package as distributed by SLES. See How to fix? for SLES:15.5 relevant fixed versions and status.

A NULL pointer dereference was found in io_file_bitmap_get in io_uring/filetable.c in the io_uring sub-component in the Linux Kernel. When fixed files are unregistered, some context information (file_alloc_{start,end} and alloc_hint) is not cleared. A subsequent request that has auto index selection enabled via IORING_FILE_INDEX_ALLOC can cause a NULL pointer dereference. An unprivileged user can use the flaw to cause a system crash.

CVSS Base Scores

version 3.1