Critical 9.8Published Jun 24, 2026

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

Updated under an hour ago (Oct 26, 2026, 1:23 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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: 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-825
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 4b3418fba0fe819197e3359d5ddbef84ba2c59de before 7bff2c8fe5c35ae58bf73104f53db3676e6e5d94; from 4b3418fba0fe819197e3359d5ddbef84ba2c59de before aff0f28f5be803de2452ce702631c021fcd9ce8a; from 4b3418fba0fe819197e3359d5ddbef84ba2c59de before 38bdbc897c0d83a3e2b925a51b69420f1feba29a; from 4b3418fba0fe819197e3359d5ddbef84ba2c59de before 0069813e6ca9309eca78022bcb3aeb1e9ef90a12; 4b3418fba0fe819197e3359d5ddbef84ba2c59de builds before 1e1f0f89ee4692a64be3f3707ff8ac1ae57b03e7; from 4b3418fba0fe819197e3359d5ddbef84ba2c59de before 7c66b368c6ff453f99cb39d84af93e908e51eef2; from 4b3418fba0fe819197e3359d5ddbef84ba2c59de before 085e31a811ef234ef8c3e219c4636dfebfe7e10f; from 4b3418fba0fe819197e3359d5ddbef84ba2c59de before f996edd7615e686ada141b7f3395025729ff8ccb	CNA record
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux	from 0:6.12.0-211.40.1.el10_2 not affected	CISA ADP
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support redhat:enterprise_linux_eus	from 0:6.12.0-55.103.1.el10_0 not affected	CISA ADP
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support redhat:rhel_aus	from 0:4.18.0-305.206.1.el8_4 not affected	CISA ADP
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On redhat:rhel_eus_long_life	from 0:4.18.0-305.206.1.el8_4 not affected	CISA ADP
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service redhat:rhel_tus	from 0:4.18.0-477.163.1.el8_8 not affected	CISA ADP
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions redhat:rhel_e4s	from 0:4.18.0-477.163.1.el8_8 not affected	CISA ADP
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support redhat:rhel_eus	from 0:5.14.0-570.138.1.el9_6 not affected	CISA ADP
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.6	CISA ADP
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name)	from V3.1.6	CISA ADP
1–10 of 13

References

References

https://git.kernel.org/stable/c/7bff2c8fe5c35ae58bf73104f53db3676e6e5d94	patch
https://git.kernel.org/stable/c/aff0f28f5be803de2452ce702631c021fcd9ce8a	patch
https://git.kernel.org/stable/c/38bdbc897c0d83a3e2b925a51b69420f1feba29a	patch
https://git.kernel.org/stable/c/0069813e6ca9309eca78022bcb3aeb1e9ef90a12	patch
https://git.kernel.org/stable/c/1e1f0f89ee4692a64be3f3707ff8ac1ae57b03e7	patch
https://git.kernel.org/stable/c/7c66b368c6ff453f99cb39d84af93e908e51eef2	patch
https://git.kernel.org/stable/c/085e31a811ef234ef8c3e219c4636dfebfe7e10f	patch
https://git.kernel.org/stable/c/f996edd7615e686ada141b7f3395025729ff8ccb	patch
https://access.redhat.com/errata/RHSA-2026:45192
https://access.redhat.com/errata/RHSA-2026:47010
1–10 of 25

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.