CVE-2024-49852
In the Linux kernel, the following vulnerability has been resolved: scsi: elx: libefc: Fix potential use after free in efc_nport_vport_del() The kref_put() function will call nport->release if the refcount drops to zero.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.21%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In the Linux kernel, the following vulnerability has been resolved: scsi: elx: libefc: Fix potential use after free in efc_nport_vport_del() The kref_put() function will call nport->release if the refcount drops to zero. The nport->release release function is _efc_nport_free() which frees "nport". But then we dereference "nport" on the next line which is a use after free. Re-order these lines to avoid the use after free.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.21% probability · 11th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/16a570f07d870a285b0c0b0d1ca4dff79e8aa5ffPatch
- https://git.kernel.org/stable/c/2e4b02fad094976763af08fec2c620f4f8edd9aePatch
- https://git.kernel.org/stable/c/7c2908985e4ae0ea1b526b3916de9e5351650908Patch
- https://git.kernel.org/stable/c/98752fcd076a8cbc978016eae7125b4971be1eecPatch
- https://git.kernel.org/stable/c/abc71e89170ed32ecf0a5a29f31aa711e143e941Patch
- https://git.kernel.org/stable/c/baeb8628ab7f4577740f00e439d3fdf7c876b0ffPatch
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.