CVE-2025-38079 crypto: algif_hash - fix double free in hash_accept
A double free vulnerability in the Linux kernel's algif_hash module allows attackers to trigger a use-after-free, potentially leading to code execution or system crashes.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-38079?
CVE-2025-38079 is a high-severity use after free vulnerability in Debian Debian Linux, published on 18 Jun 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
crypto: algif_hash - fix double free in hash_accept
If accept(2) is called on socket type algif_hash with MSG_MORE flag set and crypto_ahash_import fails, sk2 is freed. However, it is also freed in af_alg_release, leading to slab-use-after-free error.
Weakness: CWE-415
Which versions are affected by CVE-2025-38079?
It affects 2 products.
Linux distribution packages (37)
bpftool Red Hat:rhel_els:7 | All versions | 0:3.10.0-1160.138.1.el7 |
bpftool-debuginfo Red Hat:rhel_els:7 | All versions | 0:3.10.0-1160.138.1.el7 |
kernel Red Hat:rhel_els:7 | All versions | 0:3.10.0-1160.138.1.el7 |
kernel-abi-whitelists Red Hat:rhel_els:7 | All versions | 0:3.10.0-1160.138.1.el7 |
kernel-bootwrapper Red Hat:rhel_els:7 | All versions | 0:3.10.0-1160.138.1.el7 |
kernel-debug Red Hat:rhel_els:7 | All versions | 0:3.10.0-1160.138.1.el7 |
kernel-debug-debuginfo Red Hat:rhel_els:7 | All versions | 0:3.10.0-1160.138.1.el7 |
kernel-debug-devel Red Hat:rhel_els:7 | All versions | 0:3.10.0-1160.138.1.el7 |
kernel-debuginfo Red Hat:rhel_els:7 | All versions | 0:3.10.0-1160.138.1.el7 |
kernel-debuginfo-common-ppc64 Red Hat:rhel_els:7 | All versions | 0:3.10.0-1160.138.1.el7 |
kernel-debuginfo-common-ppc64le Red Hat:rhel_els:7 | All versions | 0:3.10.0-1160.138.1.el7 |
kernel-debuginfo-common-s390x Red Hat:rhel_els:7 | All versions | 0:3.10.0-1160.138.1.el7 |
kernel-debuginfo-common-x86_64 Red Hat:rhel_els:7 | All versions | 0:3.10.0-1160.138.1.el7 |
kernel-devel Red Hat:rhel_els:7 | All versions | 0:3.10.0-1160.138.1.el7 |
kernel-doc Red Hat:rhel_els:7 | All versions | 0:3.10.0-1160.138.1.el7 |
kernel-kdump Red Hat:rhel_els:7 | All versions | 0:3.10.0-1160.138.1.el7 |
kernel-kdump-debuginfo Red Hat:rhel_els:7 | All versions | 0:3.10.0-1160.138.1.el7 |
kernel-kdump-devel Red Hat:rhel_els:7 | All versions | 0:3.10.0-1160.138.1.el7 |
kernel-tools Red Hat:rhel_els:7 | All versions | 0:3.10.0-1160.138.1.el7 |
kernel-tools-debuginfo Red Hat:rhel_els:7 | All versions | 0:3.10.0-1160.138.1.el7 |
kernel-tools-libs Red Hat:rhel_els:7 | All versions | 0:3.10.0-1160.138.1.el7 |
kernel-tools-libs-devel Red Hat:rhel_els:7 | All versions | 0:3.10.0-1160.138.1.el7 |
perf Red Hat:rhel_els:7 | All versions | 0:3.10.0-1160.138.1.el7 |
perf-debuginfo Red Hat:rhel_els:7 | All versions | 0:3.10.0-1160.138.1.el7 |
python-perf Red Hat:rhel_els:7 | All versions | 0:3.10.0-1160.138.1.el7 |
python-perf-debuginfo Red Hat:rhel_els:7 | All versions | 0:3.10.0-1160.138.1.el7 |
kernel-rt Red Hat:rhel_extras_rt_els:7 | All versions | 0:3.10.0-1160.138.1.rt56.1290.el7 |
kernel-rt-debug Red Hat:rhel_extras_rt_els:7 | All versions | 0:3.10.0-1160.138.1.rt56.1290.el7 |
kernel-rt-debug-debuginfo Red Hat:rhel_extras_rt_els:7 | All versions | 0:3.10.0-1160.138.1.rt56.1290.el7 |
kernel-rt-debug-devel Red Hat:rhel_extras_rt_els:7 | All versions | 0:3.10.0-1160.138.1.rt56.1290.el7 |
kernel-rt-debuginfo Red Hat:rhel_extras_rt_els:7 | All versions | 0:3.10.0-1160.138.1.rt56.1290.el7 |
kernel-rt-debuginfo-common-x86_64 Red Hat:rhel_extras_rt_els:7 | All versions | 0:3.10.0-1160.138.1.rt56.1290.el7 |
kernel-rt-devel Red Hat:rhel_extras_rt_els:7 | All versions | 0:3.10.0-1160.138.1.rt56.1290.el7 |
kernel-rt-doc Red Hat:rhel_extras_rt_els:7 | All versions | 0:3.10.0-1160.138.1.rt56.1290.el7 |
kernel-rt-trace Red Hat:rhel_extras_rt_els:7 | All versions | 0:3.10.0-1160.138.1.rt56.1290.el7 |
kernel-rt-trace-debuginfo Red Hat:rhel_extras_rt_els:7 | All versions | 0:3.10.0-1160.138.1.rt56.1290.el7 |
kernel-rt-trace-devel Red Hat:rhel_extras_rt_els:7 | All versions | 0:3.10.0-1160.138.1.rt56.1290.el7 |
Products include Debian Debian Linux, Linux kernel.
How do I fix CVE-2025-38079?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2025-38079 being exploited?
There is no known exploitation of CVE-2025-38079 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as AZL-64007, BELL-CVE-2025-38079, DEBIAN-CVE-2025-38079, GHSA-r6vx-mj26-9m2q, RHSA-2025:14986, RHSA-2025:14987 and 5 more.