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CVE-2026-53303Disclosure(linux / linux_kernel)

LOWCVSS 7.1 · HIGH

Signal is active with 2 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: f2fs: protect extension_list reading with sb_lock in f2fs_sbi_show() In f2fs_sbi_show(), the extension_list, extension_count and hot_ext_count are read without holding sbi->sb_lock. If a concurrent sysfs store modifies the extension list via f2fs_update_extension_list(), the show path may read inconsistent count and array contents, potentially leading to out-of-bounds access or displaying stale data. Fix this by holding sb_lock around the entire extension list read and format operation.

linux CVEsBack to dashboard
0.5/ 10 priority

Sources & remediation

Patch / fix
Weakness type (CWE)
CWE-125

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

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 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • 2 total mentions across 1 day

Affected systems

Vendors
linux
Products
linux_kernel

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-06-28: 2Patch / Workaround · 2026-06-28: 1Technical Details · 2026-06-28: 106-28
Signal classification2 categories
Disclosure
150.0%
Patch
150.0%
Referenced assets2 URLs
By indicator
Full discourse2 posts
  • Infoflowcloud@infoflowcloud
    Patch

    🚨*CVE* CVE-2026-53303 In the Linux kernel, the following vulnerability has been resolved: f2fs: protect extension_list reading with sb_lock in f2fs_sbi_show() In f2fs_sbi_show(), the ext… https://www.cve.org/CVERecord?id=CVE-2026-53303 ----- Traducción: CVE-2026-53303 En … http://infoflow.cloud`

    Post summary

    The post announces that CVE-2026-53303 has been fixed in the Linux kernel, detailing the specific patch (protecting f2fs extension_list reading with sb_lock). No exploits or active attacks are reported.

    0000034
    89 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-53303 In the Linux kernel, the following vulnerability has been resolved: f2fs: protect extension_list reading with sb_lock in f2fs_sbi_show() In f2fs_sbi_show(), the ext… https://www.cve.org/CVERecord?id=CVE-2026-53303

    Post summary

    The post announces that CVE-2026-53303, a Linux kernel f2fs bug involving extension_list reading, has been resolved, but offers only a brief header and a link to the CVE record without further technical or exploit details.

    00000711
    57.7K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
OSlinuxlinux_kernel---

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