CVE-2019-15920 Use after free in n/a

What is CVE-2019-15920?

CVE-2019-15920 is a medium-severity use after free vulnerability in Linux kernel, published on 4 Sep 2019. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

An issue was discovered in the Linux kernel before 5.0.10. SMB2_read in fs/cifs/smb2pdu.c has a use-after-free. NOTE: this was not fixed correctly in 5.0.10; see the 5.0.11 ChangeLog, which documents a memory leak.

Weakness: CWE-416

Which versions are affected by CVE-2019-15920?

It affects 2 products.

Products include Linux kernel, Opensuse Leap.

How do I fix CVE-2019-15920?

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-2019-15920 being exploited?

There is no known exploitation of CVE-2019-15920 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2019-15920, GHSA-ppjf-83xq-9mv2, UBUNTU-CVE-2019-15920.