CVE-2022-49688

Katalog CVE

CVSS 5.5 · Medium EPSS 0,30%

Kerentanan NULL Pointer Dereference pada linux kernel. Skor CVSS 3.1 5.5 (Medium) menurut NVD.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: afs: Fix dynamic root getattr The recent patch to make afs_getattr consult the server didn't account for the pseudo-inodes employed by the dynamic root-type afs superblock not having a volume or a server to access, and thus an oops occurs if such a directory is stat'd. Fix this by checking to see if the vnode->volume pointer actually points anywhere before following it in afs_getattr(). This can be tested by stat'ing a directory in /afs. It may be sufficient just to do "ls /afs" and the oops looks something like: BUG: kernel NULL pointer dereference, address: 0000000000000020 ... RIP: 0010:afs_getattr+0x8b/0x14b ... Call Trace: <TASK> vfs_statx+0x79/0xf5 vfs_fstatat+0x49/0x62

Rincian

Terbit di NVD

26 Februari 2025

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

5.5 (Medium), sumber NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-476: NULL Pointer Dereference

EPSS (30 hari)

0,30% peluang dieksploitasi; lebih tinggi dari 20,8% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/2b2bba96526f25f2eba74ecadb031de2e05a83ce patch
• https://git.kernel.org/stable/c/65c24caf1b9f5b08397c6e805ec24ebc390c6e4d patch
• https://git.kernel.org/stable/c/7844ceada44eca740d31beb3d97b8511b1ca0a9b patch
• https://git.kernel.org/stable/c/7b564e3254b7db5fbfbf11a824627a6c31b932b4 patch
• https://git.kernel.org/stable/c/cb78d1b5efffe4cf97e16766329dd7358aed3deb patch
• https://git.kernel.org/stable/c/e3a232e5767051483ffad4cef7d0a89d292a192b patch