CVE-2026-53006
CVE-2026-53006 is a critical-severity vulnerability with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-825.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- EPSS exploit prediction: 0% (30th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-38874
- Weakness: CWE-825
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2026-53006?
- 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.
- How severe is CVE-2026-53006?
- CVE-2026-53006 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-53006 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-53006?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2026-53006 have an EU (EUVD) identifier?
- Yes. CVE-2026-53006 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38874.
- When was CVE-2026-53006 published?
- CVE-2026-53006 was published on 2026-06-24 and last updated on 2026-07-06.
References
- https://git.kernel.org/stable/c/0069813e6ca9309eca78022bcb3aeb1e9ef90a12
- https://git.kernel.org/stable/c/085e31a811ef234ef8c3e219c4636dfebfe7e10f
- https://git.kernel.org/stable/c/1e1f0f89ee4692a64be3f3707ff8ac1ae57b03e7
- https://git.kernel.org/stable/c/38bdbc897c0d83a3e2b925a51b69420f1feba29a
- https://git.kernel.org/stable/c/7bff2c8fe5c35ae58bf73104f53db3676e6e5d94
- https://git.kernel.org/stable/c/7c66b368c6ff453f99cb39d84af93e908e51eef2
- https://git.kernel.org/stable/c/aff0f28f5be803de2452ce702631c021fcd9ce8a
- https://git.kernel.org/stable/c/f996edd7615e686ada141b7f3395025729ff8ccb
- https://access.redhat.com/security/cve/CVE-2026-53006
- https://bugzilla.redhat.com/show_bug.cgi?id=2492363
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53006.json
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