VulnSocial

CVE-2026-53369General(linux / linux_kernel)

LOWCVSS 8.4 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch linux linux_kernel systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

In the Linux kernel, the following vulnerability has been resolved: udf: reject descriptors with oversized CRC length udf_read_tagged() skips CRC verification when descCRCLength + sizeof(struct tag) exceeds the block size. A crafted UDF image can set descCRCLength to an oversized value to bypass CRC validation entirely; the descriptor is then accepted based solely on the 8-bit tag checksum, which is trivially recomputable. Reject such descriptors instead of silently accepting them. A legitimate single-block descriptor should never have a CRC length that exceeds the block.

linux CVEsBack to dashboard
0.5/ 10 priority

Sources & remediation

Patch / fix

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • linux_kernel

Threat summary

  • Patch or workaround signal is available
  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 2 signals
  • General: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-07-19); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Vendors
linux
Products
linux_kernel

2 versions affected across 1 product

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-07-19: 1Mentions · 2026-07-21: 1Patch / Workaround · 2026-07-21: 1Technical Details · 2026-07-19: 1Technical Details · 2026-07-21: 107-1907-21
Signal classification2 categories
General
150.0%
Patch
150.0%
Referenced assets1 URL
By indicator
Classification over time
DateTotalLabels
2026-07-191
General1
2026-07-211
Patch1
Full discourse2 posts
  • DFIR Lab@DFIR_Lab
    Patch

    🚨 HIGH: CVE-2026-53369 | Linux kernel UDF vulnerability (CVSS 8.4) Crafted UDF images can bypass CRC validation via oversized descCRCLength, accepted on weak 8-bit checksum alone. Patch immediately. #CVE #Vulnerability #PatchNow https://t.co/VVpT4pgRbF

    Post summary

    The tweet highlights a high‑severity Linux kernel UDF vulnerability, provides technical details, and urges users to apply an immediate patch.

    0000051
    88 followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    General

    CVE-2026-53369 Linux Kernel UDF CRC Validation Bypass via Oversized Descriptor Length https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-53369

    Post summary

    The text furnishes a brief CVE reference and a concise technical description of a Linux Kernel UDF CRC validation bypass, but it offers no PoC, exploit detail, active exploitation evidence, or mitigation information.

    00000122
    4.1K followersView on X
CPE platform detail7 entries

7 of 7 entries

PartVendorProductVersionTarget SWTarget HW
OSlinuxlinux_kernel---
OSlinuxlinux_kernel2.6.12--
OSlinuxlinux_kernel2.6.12--
OSlinuxlinux_kernel2.6.12--
OSlinuxlinux_kernel2.6.12--
OSlinuxlinux_kernel2.6.12--
OSlinuxlinux_kernel7.1--

Explore more

Back to dashboardlinux CVEslinux_kernel vulnerabilities