CVE-2024-50010

CVE Details

Release Date:

2024-10-21

Description

In the Linux kernel, the following vulnerability has been resolved:\nexec: don't WARN for racy path_noexec check\nBoth i_mode and noexec checks wrapped in WARN_ON stem from an artifact\nof the previous implementation. They used to legitimately check for the\ncondition, but that got moved up in two commits:\n633fb6ac3980 ('exec: move S_ISREG() check earlier')\n0fd338b2d2cd ('exec: move path_noexec() check earlier')\nInstead of being removed said checks are WARN_ON'ed instead, which\nhas some debug value.\nHowever, the spurious path_noexec check is racy, resulting in\nunwarranted warnings should someone race with setting the noexec flag.\nOne can note there is more to perm-checking whether execve is allowed\nand none of the conditions are guaranteed to still hold after they were\ntested for.\nAdditionally this does not validate whether the code path did any perm\nchecking to begin with -- it will pass if the inode happens to be\nregular.\nKeep the redundant path_noexec() check even though it's mindless\nnonsense checking for guarantee that isn't given so drop the WARN.\nReword the commentary and do small tidy ups while here.\n[brauner: keep redundant path_noexec() check]

See more information about CVE-2024-50010 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	5.5
Vector String:	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Version:	3.1
Attack Vector:	Local
Attack Complexity:	Low
Privileges Required:	Low
User Interaction:	None
Scope:	Unchanged
Confidentiality:	None
Integrity:	None
Availability:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 8 (kernel-uek)	ELSA-2024-12887	2024-12-18
Oracle Linux version 9 (kernel-uek)	ELSA-2024-12887	2024-12-18