In the Linux kernel, the following vulnerability has been resolved:
btrfs: zoned: fix use-after-free due to race with dev replace
While loading a zone's info during creation of a block group, we can race
with a device replace operation and then trigger a use-after-free on the
device that was just replaced (source device of the replace operation).
This happens because at btrfs_load_zone_info() we extract a device from
the chunk map into a local variable and then use the device while not
under the protection of the device replace rwsem. So if there's a device
replace operation happening when we extract the device and that device
is the source of the replace operation, we will trigger a use-after-free
if before we finish using the device the replace operation finishes and
frees the device.
Fix this by enlarging the critical section under the protection of the
device replace rwsem so that all uses of the device are done inside the
critical section.
References
Configurations
Configuration 1 (hide)
|
History
24 Jul 2024, 19:02
Type | Values Removed | Values Added |
---|---|---|
CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
References | () https://git.kernel.org/stable/c/0090d6e1b210551e63cf43958dc7a1ec942cdde9 - Patch | |
References | () https://git.kernel.org/stable/c/092571ef9a812566c8f2c9038d9c2a64c49788d6 - Patch | |
References | () https://git.kernel.org/stable/c/17765964703b88d8befd899f8501150bb7e07e43 - Patch | |
References | () https://git.kernel.org/stable/c/a0cc006f4214b87e70983c692e05bb36c59b5752 - Patch | |
First Time |
Linux
Linux linux Kernel |
|
Summary |
|
|
CWE | CWE-416 | |
CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.8 |
12 Jul 2024, 13:15
Type | Values Removed | Values Added |
---|---|---|
New CVE |
Information
Published : 2024-07-12 13:15
Updated : 2024-07-24 19:02
NVD link : CVE-2024-39496
Mitre link : CVE-2024-39496
CVE.ORG link : CVE-2024-39496
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-416
Use After Free