CVE-2023-53260 — NULL Pointer Dereference in Linux

CWE-476 — NULL Pointer Dereference5 documents5 sources
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 97.72%
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: ovl: fix null pointer dereference in ovl_permission() Following process: P1 P2 path_lookupat link_path_walk inode_permission ovl_permission ovl_i_path_real(inode, &realpath) path->dentry = ovl_i_dentry_upper(inode) drop_cache __dentry_kill(ovl_dentry) iput(ovl_inode) ovl_destroy_inode(ovl_inode) dput(oi->__upperdentry) dentry_kill(upperdentry) dentry_unlink_inode upperdentry->d_inode = NULL realinode = d_inode(realpath.dentry)…

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_kernel5.19 — 6.1.43+1
▶Debianlinux/linux_kernel< 6.1.52-1+2
▶CVEListV5linux/linux4b7791b2e95805eaa9568761741d33cf929c930c — 53dd2ca2c02fdcfe3aad2345091d371063f97d17+3
▶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-mvvw-5ww4-3hgm: In the Linux kernel, the following vulnerability has been resolved: ovl: fix null pointer dereference in ovl_permission() Following process: P1 P2 p↗2025-09-15
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OSV
CVE-2023-53260: In the Linux kernel, the following vulnerability has been resolved: ovl: fix null pointer dereference in ovl_permission() Following process: P1 P2 pat↗2025-09-15
▶

📋Vendor Advisories

2
Red Hat
kernel: ovl: fix null pointer dereference in ovl_permission()↗2025-09-15
▶
Debian
CVE-2023-53260: linux - In the Linux kernel, the following vulnerability has been resolved: ovl: fix nu...↗2023
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CVE-2023-53260 — NULL Pointer Dereference in Linux | cvebase