9.8

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

Modified
AliasesRHSA-2026:47010RHSA-2026:47011UBUNTU-CVE-2026-53006
Published 24-06-2026Last modified 19-10-2026

Vulnerability summary

CVE-2026-53006 is a critical (CVSS 9.8) Use After Free vulnerability in linux. EPSS estimates a 0.39% chance of exploitation in the next 30 days, higher than 33.6% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 9.8 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 0% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.39%
0%100%
Low · -0.13 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 75 · Related 64
LSN-0122-1OPENSUSE-SU-2026:21555-1RHSA-2026:45192RHSA-2026:47017RHSA-2026:61932RHSA-2026:62568

Timeline

  1. 24-06-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

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 metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

0.39%

Chance of exploitation in the next 30 days

Percentile

34%

Versus all other CVEs

30-day change

Decrease -0.13 pp

From 0.53% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu166 products
  • linux< 4.4.0-284.318 | < 4.15.0-254.266 | < 5.4.0-234.254 | < 5.15.0-186.196 | < 6.8.0-136.136 | All versions (No fix recorded) | < 7.0.0-28.28
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 4.4.0-1157.163 | < 4.4.0-1195.210 | < 4.15.0-1195.208 | < 5.4.0-1162.173 | < 5.15.0-1112.119 | < 6.8.0-1061.64 | All versions (No fix recorded) | < 7.0.0-1009.9
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Redhat31 products
  • enterprise_linux8.0 | 9.0 | 10.0
  • bpftool< 0:4.18.0-553.148.1.el8_10
  • bpftool-debuginfo< 0:4.18.0-553.148.1.el8_10
  • kernel< 0:4.18.0-553.148.1.el8_10
  • kernel-abi-stablelists< 0:4.18.0-553.148.1.el8_10
Linux2 products
  • linux≥ 4b3418fba0fe819197e3359d5ddbef84ba2c59de, < 7bff2c8fe5c35ae58bf73104f53db3676e6e5d94 | ≥ 4b3418fba0fe819197e3359d5ddbef84ba2c59de, < aff0f28f5be803de2452ce702631c021fcd9ce8a | ≥ 4b3418fba0fe819197e3359d5ddbef84ba2c59de, < 38bdbc897c0d83a3e2b925a51b69420f1feba29a | ≥ 4b3418fba0fe819197e3359d5ddbef84ba2c59de, < 0069813e6ca9309eca78022bcb3aeb1e9ef90a12 | ≥ 4b3418fba0fe819197e3359d5ddbef84ba2c59de, < 1e1f0f89ee4692a64be3f3707ff8ac1ae57b03e7 | ≥ 4b3418fba0fe819197e3359d5ddbef84ba2c59de, < 7c66b368c6ff453f99cb39d84af93e908e51eef2 | ≥ 4b3418fba0fe819197e3359d5ddbef84ba2c59de, < 085e31a811ef234ef8c3e219c4636dfebfe7e10f | ≥ 4b3418fba0fe819197e3359d5ddbef84ba2c59de, < f996edd7615e686ada141b7f3395025729ff8ccb | 4.4
  • linux_kernel≥ 4.4, < 5.10.258 | ≥ 5.11, < 5.15.209 | ≥ 5.16, < 6.1.175 | ≥ 6.2, < 6.6.141 | ≥ 6.7, < 6.12.91 | ≥ 6.13, < 6.18.33 | ≥ 6.19, < 7.0.10
Debian1 product
  • linux< 6.1.176-1 | < 6.12.94-1 | < 7.0.10-1

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References

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