CVE-2026-72392: linux

CVSS: UnknownReceived
AliasesUBUNTU-CVE-2026-72392DEBIAN-CVE-2026-72392
Published 15-08-2026Last modified 19-08-2026
Open JSON

Vulnerability summary

CVE-2026-72392 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 11.4% of scored vulnerabilities.

Overall risk
0/100
0100
Minimal · default modelHow is this calculated?
CVSS score
Not scored
010
No CVSS score recorded
EPSS score
0.22%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 24 · Related 24
OPENSUSE-SU-2026:22091-1SUSE-SU-2026:24179-1SUSE-SU-2026:24181-1SUSE-SU-2026:24182-1SUSE-SU-2026:24184-1SUSE-SU-2026:24197-1

Timeline

  1. 15-08-2026
    PublishedVulnerability first disclosed.
  2. 19-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: ipv6: fib6: fix NULL deref in fib6_walk_continue() on multi-batch dump inet6_dump_fib() saves its progress in cb->args[1] as a positional index within the current hash chain. Between batches, a concurrent fib6_new_table() can insert a new table at the chain head, shifting all existing entries. The saved index then lands on a different table, causing fib6_dump_table() to set w->root to the wrong table while w->node still points into the previous one. fib6_walk_continue() dereferences w->node->parent (NULL) and panics: BUG: kernel NULL pointer dereference, address: 0000000000000008 RIP: 0010:fib6_walk_continue+0x6e/0x170 Call Trace: <TASK> fib6_dump_table.isra.0+0xc5/0x240 inet6_dump_fib+0xf6/0x420 rtnl_dumpit+0x30/0xa0 netlink_dump+0x15b/0x460 netlink_recvmsg+0x1d6/0x2a0 ____sys_recvmsg+0x17a/0x190 Fix by storing tb->tb6_id in cb->args[1] instead of a positional index. On resume, skip entries until the id matches; a concurrent head-insert can never match the saved id, so the walker always resumes on the correct table.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.22%

Chance of exploitation in the next 30 days

Percentile

11%

Versus all other CVEs

30-day change

0.00 pp

From 0.22% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.22%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu169 products
  • linuxAll versions (No fix recorded) | < 5.15.0-198.208 | < 6.8.0-147.147 | < 7.0.0-38.38
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1117.124 | < 6.8.0-1067.70 | < 7.0.0-1014.14
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 6.1.187-1 | < 6.12.100-1 | < 7.1.5-1
Linux1 product
  • linux≥ 1b43af5480c351dbcb2eef478bafe179cbeb6e83, < ee73a32dd258d4af66831ff006b771e19812b322 | ≥ 1b43af5480c351dbcb2eef478bafe179cbeb6e83, < 89f9c5fee3c64c5cabc34e65599308fd3c879cf9 | ≥ 1b43af5480c351dbcb2eef478bafe179cbeb6e83, < cb90a774a9c6c46961a44949a246fbb61f5f934c | ≥ 1b43af5480c351dbcb2eef478bafe179cbeb6e83, < 27210d433a8c5fe6bf7278a04bbaeb49a81d0290 | ≥ 1b43af5480c351dbcb2eef478bafe179cbeb6e83, < 059efb48dd746518898faaa9b965511009b59639 | ≥ 1b43af5480c351dbcb2eef478bafe179cbeb6e83, < d8a01d27873e04bebd357dc87859aa756e0b28b2 | ≥ 1b43af5480c351dbcb2eef478bafe179cbeb6e83, < 110ccbd28c9444866fcc84ba96a2ad64fa6e95ae | ≥ 1b43af5480c351dbcb2eef478bafe179cbeb6e83, < 9facb861dc6b9b9ea9793ef5032a9a826f7a4229 | 2.6.19

3 vendors · 171 products

References

27 links
Show all 27 references