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Review reviewHigh

CVE-2024-47741

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix race setting file private on concurrent lseek using same fd When doing concurrent lseek(2) system calls against the same file descriptor, using multiple threads belonging to the same process, we have a short time window where a race happens and can result in a memory leak. The race happens like this: 1) A program opens a file descriptor for a file and then spawns two threads (with the pthreads library for example), lets call them task A and task B; 2) Task A calls lseek with SEEK_DATA or SEEK_HOLE and ends up at...

CVSS
7
EPSS
-
- percentile
CISA KEV
Not listed
Published
2024.10.21
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 7

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix race setting file private on concurrent lseek using same fd When doing concurrent lseek(2) system calls against the same file descriptor, using multiple threads belonging to the same process, we have a short time window where a race happens and can result in a memory leak. The race happens like this: 1) A program opens a file descriptor for a file and then spawns two threads (with the pthreads library for example), lets call them task A and task B; 2) Task A calls lseek with SEEK_DATA or SEEK_HOLE and ends up at...

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= 3c32c7212f1639471ec0197ff1179b8ef2e0f3d3 < f56a6d9c267ec7fa558ede7755551c047b1034cd, >= 3c32c7212f1639471ec0197ff1179b8ef2e0f3d3 < a412ca489ac27b9d0e603499315b7139c948130d, >= 3c32c7212f1639471ec0197ff1179b8ef2e0f3d3 < 33d1310d4496e904123dab9c28b2d8d2c1800f97, >= 3c32c7212f1639471ec0197ff1179b8ef2e0f3d3 < 7ee85f5515e86a4e2a2f51969795920733912bad, >= 6.2, >= 6.2 < 6.6.54, >= 6.7 < 6.10.13, >= 6.11 < 6.11.2
Fixed versions
6.6.54, 6.10.13, 6.11.2

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel 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:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-362
CVE-2024-47741 — Linux Linux, linux kernel | SECUFOCUS NOW