CVE Explorer

CVE-2026-43186

In the Linux kernel, the following vulnerability has been resolved: ipv6: ioam: fix heap buffer overflow in __ioam6_fill_trace_data() On the receive path, __ioam6_fill_trace_data() uses trace->nodelen to decide how much data to write for each node. It trusts this field as-is from the incoming packet, with no consistency check against trace->type (the 24-bit field that tells which data items are present). A crafted packet can set nodelen=0 while setting type bits 0-21, causing the function to w

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:824ffca6c99497225650e92d07c82c360907cdd8fd26f516afab052c6b0d5e15

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"affected","product":"Linux","programFiles":["include/net/ioam6.h","net/ipv6/exthdrs.c","net/ipv6/ioam6.c","net/ipv6/ioam6_iptunnel.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.15"},{"lessThan":"5.15","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.202","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.165","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"u…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:b094bf789e016284165802f140c2142df6af0ca382a7670246758c305815f5dd · sha256:bfb989e39efb821c… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["include/net/ioam6.h","net/ipv6/exthdrs.c","net/ipv6/ioam6.c","net/ipv6/ioam6_iptunnel.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"f4d9d4b8fd839719d564651671e24c62c545c23b","status":"affected","version":"9ee11f0fff205b4b3df9750bff5e94f97c71b6a0","versionType":"git"},{"lessThan":"fb3c662fafebc5b9d74417ed1de8759f6bb72143","status":"affected","version":"9ee11f0fff205b4b3df9750bff5e94f97c71b6a0","versionType":"git"},{"lessThan":"632d233cf2e64a46865ae2c064ae3c9…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:b094bf789e016284165802f140c2142df6af0ca382a7670246758c305815f5dd · sha256:bfb989e39efb821c… · /containers/cna/affected/0

Affected products and versions

2 source assertions

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:b094bf789e016284165802f140c2142df6af0ca382a7670246758c305815f5dd · sha256:bfb989e39efb821c… · /containers/cna/affected/1

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:b094bf789e016284165802f140c2142df6af0ca382a7670246758c305815f5dd · sha256:bfb989e39efb821c… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"baseScore":9.8,"baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:b094bf789e016284165802f140c2142df6af0ca382a7670246758c305815f5dd · sha256:bfb989e39efb821c… · /containers/cna/metrics/0/cvssV3_1

Source references

7 source assertions

{"url":"https://git.kernel.org/stable/c/0591d6509c2ff13f09ea2998434aba0c0472e978"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:b094bf789e016284165802f140c2142df6af0ca382a7670246758c305815f5dd · sha256:bfb989e39efb821c… · /containers/cna/references/3

{"url":"https://git.kernel.org/stable/c/632d233cf2e64a46865ae2c064ae3c9df7c8864f"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:b094bf789e016284165802f140c2142df6af0ca382a7670246758c305815f5dd · sha256:bfb989e39efb821c… · /containers/cna/references/2

{"url":"https://git.kernel.org/stable/c/6db8b56eed62baacaf37486e83378a72635c04cc"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:b094bf789e016284165802f140c2142df6af0ca382a7670246758c305815f5dd · sha256:bfb989e39efb821c… · /containers/cna/references/6

{"url":"https://git.kernel.org/stable/c/e90346a2f1e8917d5760a44a1f61c44e3b36d96b"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:b094bf789e016284165802f140c2142df6af0ca382a7670246758c305815f5dd · sha256:bfb989e39efb821c… · /containers/cna/references/4

{"url":"https://git.kernel.org/stable/c/ea3632aefc04205436868541638e26f4a74d5637"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:b094bf789e016284165802f140c2142df6af0ca382a7670246758c305815f5dd · sha256:bfb989e39efb821c… · /containers/cna/references/5

{"url":"https://git.kernel.org/stable/c/f4d9d4b8fd839719d564651671e24c62c545c23b"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:b094bf789e016284165802f140c2142df6af0ca382a7670246758c305815f5dd · sha256:bfb989e39efb821c… · /containers/cna/references/0

{"url":"https://git.kernel.org/stable/c/fb3c662fafebc5b9d74417ed1de8759f6bb72143"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:b094bf789e016284165802f140c2142df6af0ca382a7670246758c305815f5dd · sha256:bfb989e39efb821c… · /containers/cna/references/1

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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