CVE - CVE-2024-46840

CVE-ID
CVE-2024-46840	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: btrfs: clean up our handling of refs == 0 in snapshot delete In reada we BUG_ON(refs == 0), which could be unkind since we aren't holding a lock on the extent leaf and thus could get a transient incorrect answer. In walk_down_proc we also BUG_ON(refs == 0), which could happen if we have extent tree corruption. Change that to return -EUCLEAN. In do_walk_down() we catch this case and handle it correctly, however we return -EIO, which -EUCLEAN is a more appropriate error code. Finally in walk_up_proc we have the same BUG_ON(refs == 0), so convert that to proper error handling. Also adjust the error message so we can actually do something with the information.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/03804641ec2d0da4fa088ad21c88e703d151ce16 URL:https://git.kernel.org/stable/c/03804641ec2d0da4fa088ad21c88e703d151ce16 MISC:https://git.kernel.org/stable/c/71291aa7246645ef622621934d2067400380645e URL:https://git.kernel.org/stable/c/71291aa7246645ef622621934d2067400380645e MISC:https://git.kernel.org/stable/c/728d4d045b628e006b48a448f3326a7194c88d32 URL:https://git.kernel.org/stable/c/728d4d045b628e006b48a448f3326a7194c88d32 MISC:https://git.kernel.org/stable/c/7d1df13bf078ffebfedd361d714ff6cee1ff01b9 URL:https://git.kernel.org/stable/c/7d1df13bf078ffebfedd361d714ff6cee1ff01b9 MISC:https://git.kernel.org/stable/c/9cc887ac24b7a0598f4042ae9af6b9a33072f75b URL:https://git.kernel.org/stable/c/9cc887ac24b7a0598f4042ae9af6b9a33072f75b MISC:https://git.kernel.org/stable/c/b8ccef048354074a548f108e51d0557d6adfd3a3 URL:https://git.kernel.org/stable/c/b8ccef048354074a548f108e51d0557d6adfd3a3 MISC:https://git.kernel.org/stable/c/c60676b81fab456b672796830f6d8057058f029c URL:https://git.kernel.org/stable/c/c60676b81fab456b672796830f6d8057058f029c MISC:https://git.kernel.org/stable/c/c847b28a799733b04574060ab9d00f215970627d URL:https://git.kernel.org/stable/c/c847b28a799733b04574060ab9d00f215970627d
Assigning CNA
kernel.org
Date Record Created
20240911	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240911)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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