CVE-2024-38545

RDMA/hns: Fix UAF for cq async event

State: Published
Severity: 7.8 High
Published: Jun 19, 2024
Updated: Aug 5, 2026
Reserved: Jun 18, 2024

Description

In the Linux kernel, the following vulnerability has been resolved:

RDMA/hns: Fix UAF for cq async event

The refcount of CQ is not protected by locks. When CQ asynchronous events and CQ destruction are concurrent, CQ may have been released, which will cause UAF.

Use the xa_lock() to protect the CQ refcount.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	9a4435375cd151e07c0c38fa601b00115986091b to before 330c825e66ef65278e4ebe57fd49c1d6f3f4e34eAffected 9a4435375cd151e07c0c38fa601b00115986091b to before 763780ef0336a973e933e40e919339381732dcafAffected 9a4435375cd151e07c0c38fa601b00115986091b to before 63da190eeb5c9d849b71f457b15b308c94cbaf08Affected 9a4435375cd151e07c0c38fa601b00115986091b to before 39d26cf46306bdc7ae809ecfdbfeff5aa1098911Affected 9a4435375cd151e07c0c38fa601b00115986091b to before 37a7559dc1358a8d300437e99ed8ecdab0671507Affected 9a4435375cd151e07c0c38fa601b00115986091b to before a942ec2745ca864cd8512142100e4027dc306a42Affected
LinuxLinux	4.9Affected before 4.9Not affected 5.15.168 through 5.15.Not affected 6.1.93 through 6.1.Not affected 6.6.33 through 6.6.Not affected 6.8.12 through 6.8.Not affected 6.9.3 through 6.9.*Not affected 6.10 and laterNot affected

Product

Versions

LinuxLinux

9a4435375cd151e07c0c38fa601b00115986091b to before 330c825e66ef65278e4ebe57fd49c1d6f3f4e34eAffected
9a4435375cd151e07c0c38fa601b00115986091b to before 763780ef0336a973e933e40e919339381732dcafAffected
9a4435375cd151e07c0c38fa601b00115986091b to before 63da190eeb5c9d849b71f457b15b308c94cbaf08Affected
9a4435375cd151e07c0c38fa601b00115986091b to before 39d26cf46306bdc7ae809ecfdbfeff5aa1098911Affected
9a4435375cd151e07c0c38fa601b00115986091b to before 37a7559dc1358a8d300437e99ed8ecdab0671507Affected
9a4435375cd151e07c0c38fa601b00115986091b to before a942ec2745ca864cd8512142100e4027dc306a42Affected

LinuxLinux

4.9Affected
before 4.9Not affected
5.15.168 through 5.15.*Not affected
6.1.93 through 6.1.*Not affected
6.6.33 through 6.6.*Not affected
6.8.12 through 6.8.*Not affected
6.9.3 through 6.9.*Not affected
6.10 and laterNot affected

References

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