CVE-2026-53006: ipv6: fix possible UAF in icmpv6_rcv()

Critical severity · published Jun 24, 2026

CVE-2026-53006

ipv6: fix possible UAF in icmpv6_rcv()

9.8

CVSS

0.4%

EPSS

On KEV

Description

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix possible UAF in icmpv6_rcv() Caching saddr and daddr before pskb_pull() is problematic since skb->head can change. Remove these temporary variables: - We only access &ipv6_hdr(skb)->saddr and &ipv6_hdr(skb)->daddr when net_dbg_ratelimited() is called in the slow path. - Avoid potential future misuse after pskb_pull() call.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack vector

Network

Complexity

Low

Privileges

None

User interaction

None

Confidentiality

High

Integrity

High

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)0.4% · higher than 33% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Kernel · Linux

4.4 before 5.10.258; 5.11 before 5.15.209; 5.16 before 6.1.175; 6.2 before 6.6.141; 6.7 before 6.12.91; 6.13 before 6.18.33; +1 more · source: NVD

Linux · Linux

4b3418fba0fe819197e3359d5ddbef84ba2c59de before 7bff2c8fe5c35ae58bf73104f53db3676e6e5d94; 4b3418fba0fe819197e3359d5ddbef84ba2c59de before aff0f28f5be803de2452ce702631c021fcd9ce8a; 4b3418fba0fe819197e3359d5ddbef84ba2c59de before 38bdbc897c0d83a3e2b925a51b69420f1feba29a; 4b3418fba0fe819197e3359d5ddbef84ba2c59de before 0069813e6ca9309eca78022bcb3aeb1e9ef90a12; 4b3418fba0fe819197e3359d5ddbef84ba2c59de before 1e1f0f89ee4692a64be3f3707ff8ac1ae57b03e7; 4b3418fba0fe819197e3359d5ddbef84ba2c59de before 7c66b368c6ff453f99cb39d84af93e908e51eef2; +3 more · source: vendor

Enterprise Linux · Redhat

8.0; 9.0; 10.0 · source: NVD

Red Hat Enterprise Linux 10 · Red Hat