CVE-2023-53147 — NULL Pointer Dereference in Linux

CWE-476 — NULL Pointer Dereference5 documents5 sources
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 95.77%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
LinuxLinux KernelDebian Linux
Timeline
PublishedSep 15

Description

In the Linux kernel, the following vulnerability has been resolved: xfrm: add NULL check in xfrm_update_ae_params Normally, x->replay_esn and x->preplay_esn should be allocated at xfrm_alloc_replay_state_esn(...) in xfrm_state_construct(...), hence the xfrm_update_ae_params(...) is okay to update them. However, the current implementation of xfrm_new_ae(...) allows a malicious user to directly dereference a NULL pointer and crash the kernel like below. BUG: kernel NULL pointer dereference, add…

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_kernel2.6.39 — 4.14.324+7
▶Debianlinux/linux_kernel< 5.10.197-1+3
▶CVEListV5linux/linuxd8647b79c3b7e223ac051439d165bc8e7bbb832f — ed1cba039309c80b49719fcff3e3d7cdddb73d96+8
▶debiandebian/linux< linux 6.1.52-1 (bookworm)

Patches

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

🔴Vulnerability Details

2
GHSA
GHSA-x33g-396q-pw6p: In the Linux kernel, the following vulnerability has been resolved: xfrm: add NULL check in xfrm_update_ae_params Normally, x->replay_esn and x->pre↗2025-09-15
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OSV
CVE-2023-53147: In the Linux kernel, the following vulnerability has been resolved: xfrm: add NULL check in xfrm_update_ae_params Normally, x->replay_esn and x->prepl↗2025-09-15
▶

📋Vendor Advisories

2
Red Hat
kernel: xfrm: add NULL check in xfrm_update_ae_params↗2025-09-15
▶
Debian
CVE-2023-53147: linux - In the Linux kernel, the following vulnerability has been resolved: xfrm: add N...↗2023
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CVE-2023-53147 — NULL Pointer Dereference in Linux | cvebase