CVE-2023-53354 — 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 17

Description

In the Linux kernel, the following vulnerability has been resolved: skbuff: skb_segment, Call zero copy functions before using skbuff frags Commit bf5c25d60861 ("skbuff: in skb_segment, call zerocopy functions once per nskb") added the call to zero copy functions in skb_segment(). The change introduced a bug in skb_segment() because skb_orphan_frags() may possibly change the number of fragments or allocate new fragments altogether leaving nrfrags and frag to point to the old values. This can c…

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_kernel4.16 — 4.19.295+6
▶Debianlinux/linux_kernel< 5.10.197-1+3
▶CVEListV5linux/linuxbf5c25d608613eaf4dcdba5a9cac5b2afe67d635 — fcab3f661dbfd88e27ddbbe65368f3fa2d823175+8
▶debiandebian/linux< linux 6.1.55-1 (bookworm)

Patches

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

🔴Vulnerability Details

2
GHSA
GHSA-g3hm-fhhv-62r9: In the Linux kernel, the following vulnerability has been resolved: skbuff: skb_segment, Call zero copy functions before using skbuff frags Commit b↗2025-09-17
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OSV
CVE-2023-53354: In the Linux kernel, the following vulnerability has been resolved: skbuff: skb_segment, Call zero copy functions before using skbuff frags Commit bf5↗2025-09-17
▶

📋Vendor Advisories

2
Red Hat
kernel: skbuff: skb_segment, Call zero copy functions before using skbuff frags↗2025-09-17
▶
Debian
CVE-2023-53354: linux - In the Linux kernel, the following vulnerability has been resolved: skbuff: skb...↗2023
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CVE-2023-53354 — NULL Pointer Dereference in Linux | cvebase