CVE-2023-53246 — NULL Pointer Dereference in Linux

CWE-476 — NULL Pointer Dereference5 documents5 sources
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 91.59%
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: cifs: fix DFS traversal oops without CONFIG_CIFS_DFS_UPCALL When compiled with CONFIG_CIFS_DFS_UPCALL disabled, cifs_dfs_d_automount is NULL. cifs.ko logic for mapping CIFS_FATTR_DFS_REFERRAL attributes to S_AUTOMOUNT and corresponding dentry flags is retained regardless of CONFIG_CIFS_DFS_UPCALL, leading to a NULL pointer dereference in VFS follow_automount() when traversing a DFS referral link: BUG: kernel NULL pointer deref…

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_kernel4.15 — 4.19.280+7
▶Debianlinux/linux_kernel< 5.10.178-1+3
▶CVEListV5linux/linux25e195aa1e607f129ab912d29fcfc79239703307 — 26a32a212bc540f4773cd6af8cf73e967d72569c+5
▶debiandebian/linux< linux 6.1.25-1 (bookworm)

Patches

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

🔴Vulnerability Details

2
OSV
CVE-2023-53246: In the Linux kernel, the following vulnerability has been resolved: cifs: fix DFS traversal oops without CONFIG_CIFS_DFS_UPCALL When compiled with CON↗2025-09-15
▶
GHSA
GHSA-jpvg-r3q7-3w8j: In the Linux kernel, the following vulnerability has been resolved: cifs: fix DFS traversal oops without CONFIG_CIFS_DFS_UPCALL When compiled with C↗2025-09-15
▶

📋Vendor Advisories

2
Red Hat
kernel: cifs: fix DFS traversal oops without CONFIG_CIFS_DFS_UPCALL↗2025-09-15
▶
Debian
CVE-2023-53246: linux - In the Linux kernel, the following vulnerability has been resolved: cifs: fix D...↗2023
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CVE-2023-53246 — NULL Pointer Dereference in Linux | cvebase