Vulnerability in Kernel (CVE-2023-53265)

Summary

Vulnerability in Kernel (CVE-2023-53265). Confidential information can be exposed externally. Mitigation: upgrade to 4.14.308, 4.19.276, 5.4.235, 5.10.173, 5.15.100, 6.1.18, 6.2.5 or later.

Original description

The description as published by the source.

In the Linux kernel, the following vulnerability has been resolved:

ubi: ensure that VID header offset + VID header size <= alloc, size

Ensure that the VID header offset + VID header size does not exceed
the allocated area to avoid slab OOB.

BUG: KASAN: slab-out-of-bounds in crc32_body lib/crc32.c:111 [inline]
BUG: KASAN: slab-out-of-bounds in crc32_le_generic lib/crc32.c:179 [inline]
BUG: KASAN: slab-out-of-bounds in crc32_le_base+0x58c/0x626 lib/crc32.c:197
Read of size 4 at addr ffff88802bb36f00 by task syz-executor136/1555

CPU: 2 PID: 1555 Comm: syz-executor136 Tainted: G W
6.0.0-1868 #1
Hardware name: Red Hat KVM, BIOS 1.13.0-2.module+el8.3.0+7860+a7792d29
04/01/2014
Call Trace:

__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x85/0xad lib/dump_stack.c:106
print_address_description mm/kasan/report.c:317 [inline]
print_report.cold.13+0xb6/0x6bb mm/kasan/report.c:433
kasan_report+0xa7/0x11b mm/kasan/report.c:495
crc32_body lib/crc32.c:111 [inline]
crc32_le_generic lib/crc32.c:179 [inline]
crc32_le_base+0x58c/0x626 lib/crc32.c:197
ubi_io_write_vid_hdr+0x1b7/0x472 drivers/mtd/ubi/io.c:1067
create_vtbl+0x4d5/0x9c4 drivers/mtd/ubi/vtbl.c:317
create_empty_lvol drivers/mtd/ubi/vtbl.c:500 [inline]
ubi_read_volume_table+0x67b/0x288a drivers/mtd/ubi/vtbl.c:812
ubi_attach+0xf34/0x1603 drivers/mtd/ubi/attach.c:1601
ubi_attach_mtd_dev+0x6f3/0x185e drivers/mtd/ubi/build.c:965
ctrl_cdev_ioctl+0x2db/0x347 drivers/mtd/ubi/cdev.c:1043…

Source: OSV.dev (Open Source Vulnerabilities) NVD OSV

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2023-53265 has been found in Kernel.
Confidential information can be exposed externally.
What to do: upgrade Kernel to 4.14.308, 4.19.276, 5.4.235, 5.10.173, 5.15.100, 6.1.18, 6.2.5 or later.
If unsure, ask your IT team or search "Kernel CVE-2023-53265" on the vendor's site.

CVE-2023-53265 (Kernel)
Attack vector: local / no user interaction
Patched: 4.14.308, 4.19.276, 5.4.235, 5.10.173, 5.15.100, 6.1.18, 6.2.5 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

❓ What is the problem

A vulnerability (unclassified) exists in Kernel.

📍 Affected scope

Check the vendor advisory for the affected versions of Kernel.

🔥 Severity

Severity: ?. Confidential information can be exposed externally.

🔧 How to fix

Update to 4.14.308, 4.19.276, 5.4.235, 5.10.173, 5.15.100, 6.1.18, 6.2.5.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'Kernel' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

1
Identify exposure identify
```
grep -r 'Kernel' . | grep -v node_modules
```
リポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で Kernel を grep し、稼働しているサービス・バージョンを把握する。
2
Apply patch patch
```
Upgrade Kernel to 4.14.308, 4.19.276, 5.4.235, 5.10.173, 5.15.100, 6.1.18, 6.2.5
```
ステージング環境で 4.14.308, 4.19.276, 5.4.235, 5.10.173, 5.15.100, 6.1.18, 6.2.5 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
3
Post-deployment verification verify
```
Confirm patched version is live in production
```
パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

Affected packages

Linux Kernel

[{"type":"ECOSYSTEM","events":[{"introduced":"2.6.22"},{"fixed":"4.14.308"}]},{"type":"ECOSYSTEM","events":[{"introduced":"4.15.0"},{"fixed":"4.19.276"}]},{"type":"ECOSYSTEM","events":[{"introduced":"4.20.0"},{"fixed":"5.4.235"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.5.0"},{"fixed":"5.10.173"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.100"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.18"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.2.5"}]}]

Fix status by distribution

Fixed packages published by each distribution for this CVE

Debian DEBIAN-CVE-2023-53265 linux Fixed in: 5.10.178-1
Ubuntu UBUNTU-CVE-2023-53265 linux