CVE-2023-52846

hsr: Prevent use after free in prp_create_tagged_frame()

HIGH

7.8

CVSS Score

Published: May 21, 2024 at 03:31 PM UTC

Updated: August 5, 2026 at 10:24 AM UTC

1 product affected across 1 vendorLinux Kernel

Using Linux by Linux?

Get instant alerts when new vulnerabilities affect Linux - before attackers find them.

Real-time alertsTrack your software stackFree plan available

Start Free Sign In

Severity

HIGH7.8

Exploit prediction

EPSS 0.3%

SSVC

No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: hsr: Prevent use after free in prp_create_tagged_frame() The prp_fill_rct() function can fail. In that situation, it frees the skb and returns NULL. Meanwhile on the success path, it returns the original skb. So it's straight forward to fix bug by using the returned value.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

5.11 ≤ v < 5.15.1395.16 ≤ v < 6.1.635.9 ≤ v < 5.10.2015.9 ≤ v < 5.15.1395.9 ≤ v < 6.1.635.9 ≤ v < 6.5.125.9 ≤ v < 6.6.25.9 ≤ v < 6.76.2 ≤ v < 6.5.126.6 ≤ v < 6.6.2451d8123f89791bb628277c0bdb4cae34a3563e65.9

Vendor states this is fixed in 1787b9f0729d318d67cf7c5a95f0c3dba9a7cc18 (fixed)

Vendor states this is fixed in 6086258bd5ea7b5c706ff62da42b8e271b2401db (fixed)

Vendor states this is fixed in 876f8ab52363f649bcc74072157dfd7adfbabc0d (fixed)

Vendor states this is fixed in a1a485e45d24b1cd8fe834fd6f1b06e2903827da (fixed)

Vendor states this is fixed in d103fb6726904e353b4773188ee3d3acb4078363 (fixed)

Vendor states this is fixed in ddf4e04e946aaa6c458b8b6829617cc44af2bffd (fixed)

Vendor states this is fixed in 5.10.201 (unaffected)

Vendor states this is fixed in 5.15.139 (unaffected)

Vendor states this is fixed in 5.9 (unaffected)

Vendor states this is fixed in 6.1.63 (unaffected)

Vendor states this is fixed in 6.5.12 (unaffected)

Vendor states this is fixed in 6.6.2 (unaffected)