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Review reviewHigh

CVE-2022-50673

Linux

In the Linux kernel, the following vulnerability has been resolved: ext4: fix use-after-free in ext4_orphan_cleanup I caught a issue as follows: ================================================================== BUG: KASAN: use-after-free in __list_add_valid+0x28/0x1a0 Read of size 8 at addr ffff88814b13f378 by task mount/710 CPU: 1 PID: 710 Comm: mount Not tainted 6.1.0-rc3-next #370 Call Trace: <TASK> dump_stack_lvl+0x73/0x9f print_report+0x25d/0x759 kasan_report+0xc0/0x120 __asan_load8+0x99/0x140 __list_add_valid+0x28/0x1a0 ext4_orphan_cleanup+0x564/0x9d0 [ext4] __ext4_fill_super+0x48e2/...

CVSS
7.8
EPSS
0.18%
7.95% percentile
CISA KEV
Not listed
Published
2025.12.10
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.18%
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: ext4: fix use-after-free in ext4_orphan_cleanup I caught a issue as follows: ================================================================== BUG: KASAN: use-after-free in __list_add_valid+0x28/0x1a0 Read of size 8 at addr ffff88814b13f378 by task mount/710 CPU: 1 PID: 710 Comm: mount Not tainted 6.1.0-rc3-next #370 Call Trace: <TASK> dump_stack_lvl+0x73/0x9f print_report+0x25d/0x759 kasan_report+0xc0/0x120 __asan_load8+0x99/0x140 __list_add_valid+0x28/0x1a0 ext4_orphan_cleanup+0x564/0x9d0 [ext4] __ext4_fill_super+0x48e2/...

Affected product and versions

Product
Linux
Affected versions
>= 2c98eb5ea249767bbc11cf4e70e91d5b0458ed13 < 7f801a1593cb957f73659732836b2dafbdfc7709, >= 2c98eb5ea249767bbc11cf4e70e91d5b0458ed13 < 026a4490b5381229a30f23d073b58e8e35ee6858, >= 2c98eb5ea249767bbc11cf4e70e91d5b0458ed13 < 7223d5e75f26352354ea2c0ccf8b579821b52adf, >= 2c98eb5ea249767bbc11cf4e70e91d5b0458ed13 < cf0e0817b0f925b70d101d7014ea81b7094e1159, >= 2c98eb5ea249767bbc11cf4e70e91d5b0458ed13 < c2bdbd4c69308835d1b6f6ba74feeccbfe113478, >= 2c98eb5ea249767bbc11cf4e70e91d5b0458ed13 < 7908b8a541b1578cc61b4da7f19b604a931441da, >= 2c98eb5ea249767bbc11cf4e70e91d5b0458ed13 < a71248b1accb2b42e4980afef4fa4a27fa0e36f5, >= 4.10
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
Not available
CVE-2022-50673 — Linux | SECUFOCUS NOW