VMware Photon OS: CVE-2024-49960

VMware Photon OS: CVE-2024-49960

Severity

7

CVSS

(AV:L/AC:L/Au:S/C:C/I:C/A:C)

Published

10/21/2024

Created

01/21/2025

Added

01/20/2025

Modified

02/04/2025

Description

In the Linux kernel, the following vulnerability has been resolved: ext4: fix timer use-after-free on failed mount Syzbot has found an ODEBUG bug in ext4_fill_super The del_timer_sync function cancels the s_err_report timer, which reminds about filesystem errors daily. We should guarantee the timer is no longer active before kfree(sbi). When filesystem mounting fails, the flow goes to failed_mount3, where an error occurs when ext4_stop_mmpd is called, causing a read I/O failure. This triggers the ext4_handle_error function that ultimately re-arms the timer, leaving the s_err_report timer active before kfree(sbi) is called. Fix the issue by canceling the s_err_report timer after calling ext4_stop_mmpd.

Solution(s)

• vmware-photon_os_update_tdnf

References

• https://attackerkb.com/topics/cve-2024-49960
• CVE - 2024-49960