CVE Explorer

CVE-2026-63886

In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Validate CHAP_R length before base64 decode chap_server_compute_hash() allocates client_digest as kzalloc(chap->digest_size) and then, for BASE64-encoded responses, passes chap_r directly to chap_base64_decode() without checking whether the input length could produce more than digest_size bytes of output. chap_base64_decode() writes to the destination unconditionally as long as there is input to consume.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:beb0ffff3ebbd3cc7d038fd386efc7123b5ff4e53efba9de09ca611967d5b88e

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":["drivers/target/iscsi/iscsi_target_auth.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.0"},{"lessThan":"6.0","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.176","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.143","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.93","versionType":"semv…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:c9388bc1c4336543bfc365ced7380089d1c6155aaf54a14fd3c5a270893d8efe · sha256:07f511fc0954b719… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/target/iscsi/iscsi_target_auth.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"82454e6f21e56ea9a0a9de7d0ff7e1dfb83e34d6","status":"affected","version":"1e5733883421495908f3b90d9d807663038b4136","versionType":"git"},{"lessThan":"edd06675a02376ea8347dba7c29ad982ba5b36ee","status":"affected","version":"1e5733883421495908f3b90d9d807663038b4136","versionType":"git"},{"lessThan":"bf154c657828ed05399bca5d98cf1611bb048b12","status":"affected","version":"1e573…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:c9388bc1c4336543bfc365ced7380089d1c6155aaf54a14fd3c5a270893d8efe · sha256:07f511fc0954b719… · /containers/cna/affected/0

Affected products and versions

2 source assertions

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:c9388bc1c4336543bfc365ced7380089d1c6155aaf54a14fd3c5a270893d8efe · sha256:07f511fc0954b719… · /containers/cna/affected/1

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:c9388bc1c4336543bfc365ced7380089d1c6155aaf54a14fd3c5a270893d8efe · sha256:07f511fc0954b719… · /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:c9388bc1c4336543bfc365ced7380089d1c6155aaf54a14fd3c5a270893d8efe · sha256:07f511fc0954b719… · /containers/cna/metrics/0/cvssV3_1

Source references

6 source assertions

{"url":"https://git.kernel.org/stable/c/4a3a19c98a8207ad08bec554703d90f2c34a8cc6"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:c9388bc1c4336543bfc365ced7380089d1c6155aaf54a14fd3c5a270893d8efe · sha256:07f511fc0954b719… · /containers/cna/references/3

{"url":"https://git.kernel.org/stable/c/82454e6f21e56ea9a0a9de7d0ff7e1dfb83e34d6"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:c9388bc1c4336543bfc365ced7380089d1c6155aaf54a14fd3c5a270893d8efe · sha256:07f511fc0954b719… · /containers/cna/references/0

{"url":"https://git.kernel.org/stable/c/85db7391310b1304d2dc8ae3b0b12105a9567147"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:c9388bc1c4336543bfc365ced7380089d1c6155aaf54a14fd3c5a270893d8efe · sha256:07f511fc0954b719… · /containers/cna/references/5

{"url":"https://git.kernel.org/stable/c/bf154c657828ed05399bca5d98cf1611bb048b12"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:c9388bc1c4336543bfc365ced7380089d1c6155aaf54a14fd3c5a270893d8efe · sha256:07f511fc0954b719… · /containers/cna/references/2

{"url":"https://git.kernel.org/stable/c/c04e85799356120209b351a148ac2db888d5ffd9"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:c9388bc1c4336543bfc365ced7380089d1c6155aaf54a14fd3c5a270893d8efe · sha256:07f511fc0954b719… · /containers/cna/references/4

{"url":"https://git.kernel.org/stable/c/edd06675a02376ea8347dba7c29ad982ba5b36ee"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:c9388bc1c4336543bfc365ced7380089d1c6155aaf54a14fd3c5a270893d8efe · sha256:07f511fc0954b719… · /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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