Baitaphish
Security intelligence
SearchLatest briefing
CVE Explorer

CVE-2026-23439

In the Linux kernel, the following vulnerability has been resolved: udp_tunnel: fix NULL deref caused by udp_sock_create6 when CONFIG_IPV6=n When CONFIG_IPV6 is disabled, the udp_sock_create6() function returns 0 (success) without actually creating a socket. Callers such as fou_create() then proceed to dereference the uninitialized socket pointer, resulting in a NULL pointer dereference. The captured NULL deref crash: BUG: kernel NULL pointer dereference, address: 0000000000000018 RIP: 00
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:92460fc602c0d6a253b68797c0a9ae89096575274d9c37254c62b33f4392e2e0
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 12 assertions

{"defaultStatus":"affected","product":"Linux","programFiles":["include/net/udp_tunnel.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.18"},{"lessThan":"3.18","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.253","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.203","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.167","versionType":"semver"},{"less…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:106ada6a58875471d23fec3a85a1f7e05554bcad4c2645bce783bc83f7858199 · sha256:f81ebe442dedb247… · /containers/cna/affected/1

{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:106ada6a58875471d23fec3a85a1f7e05554bcad4c2645bce783bc83f7858199 · sha256:f81ebe442dedb247… · /containers/adp/0/affected/4

{"defaultStatus":"unknown","product":"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.5","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:106ada6a58875471d23fec3a85a1f7e05554bcad4c2645bce783bc83f7858199 · sha256:f81ebe442dedb247… · /containers/adp/0/affected/9

{"defaultStatus":"unaffected","product":"Linux","programFiles":["include/net/udp_tunnel.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"dfc96ae0074cc47b5478a59e5aa19233e434243f","status":"affected","version":"fd384412e199b62c3ddaabd18dce86d0e164c5b9","versionType":"git"},{"lessThan":"66117dbb3dbae82f86735bf727b1d59cc677afa1","status":"affected","version":"fd384412e199b62c3ddaabd18dce86d0e164c5b9","versionType":"git"},{"lessThan":"ba7c9ddcdd077942b798979edb035207374d4096","status":"affected","version":"fd384412e199b62c3ddaa…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:106ada6a58875471d23fec3a85a1f7e05554bcad4c2645bce783bc83f7858199 · sha256:f81ebe442dedb247… · /containers/cna/affected/0

{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:106ada6a58875471d23fec3a85a1f7e05554bcad4c2645bce783bc83f7858199 · sha256:f81ebe442dedb247… · /containers/adp/0/affected/6

{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.5","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:106ada6a58875471d23fec3a85a1f7e05554bcad4c2645bce783bc83f7858199 · sha256:f81ebe442dedb247… · /containers/adp/0/affected/5

{"defaultStatus":"unknown","product":"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:106ada6a58875471d23fec3a85a1f7e05554bcad4c2645bce783bc83f7858199 · sha256:f81ebe442dedb247… · /containers/adp/0/affected/8

{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:106ada6a58875471d23fec3a85a1f7e05554bcad4c2645bce783bc83f7858199 · sha256:f81ebe442dedb247… · /containers/adp/0/affected/0

{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:106ada6a58875471d23fec3a85a1f7e05554bcad4c2645bce783bc83f7858199 · sha256:f81ebe442dedb247… · /containers/adp/0/affected/2

{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.5","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:106ada6a58875471d23fec3a85a1f7e05554bcad4c2645bce783bc83f7858199 · sha256:f81ebe442dedb247… · /containers/adp/0/affected/7

{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.5","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:106ada6a58875471d23fec3a85a1f7e05554bcad4c2645bce783bc83f7858199 · sha256:f81ebe442dedb247… · /containers/adp/0/affected/3

{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.5","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:106ada6a58875471d23fec3a85a1f7e05554bcad4c2645bce783bc83f7858199 · sha256:f81ebe442dedb247… · /containers/adp/0/affected/1

Affected products and versions

12 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["include/net/udp_tunnel.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.18"},{"lessThan":"3.18","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.253","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.203","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.167","versionType":"semver"},{"less…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:106ada6a58875471d23fec3a85a1f7e05554bcad4c2645bce783bc83f7858199 · sha256:f81ebe442dedb247… · /containers/cna/affected/1
{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:106ada6a58875471d23fec3a85a1f7e05554bcad4c2645bce783bc83f7858199 · sha256:f81ebe442dedb247… · /containers/adp/0/affected/4
{"defaultStatus":"unknown","product":"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.5","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:106ada6a58875471d23fec3a85a1f7e05554bcad4c2645bce783bc83f7858199 · sha256:f81ebe442dedb247… · /containers/adp/0/affected/9
{"defaultStatus":"unaffected","product":"Linux","programFiles":["include/net/udp_tunnel.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"dfc96ae0074cc47b5478a59e5aa19233e434243f","status":"affected","version":"fd384412e199b62c3ddaabd18dce86d0e164c5b9","versionType":"git"},{"lessThan":"66117dbb3dbae82f86735bf727b1d59cc677afa1","status":"affected","version":"fd384412e199b62c3ddaabd18dce86d0e164c5b9","versionType":"git"},{"lessThan":"ba7c9ddcdd077942b798979edb035207374d4096","status":"affected","version":"fd384412e199b62c3ddaa…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:106ada6a58875471d23fec3a85a1f7e05554bcad4c2645bce783bc83f7858199 · sha256:f81ebe442dedb247… · /containers/cna/affected/0
{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:106ada6a58875471d23fec3a85a1f7e05554bcad4c2645bce783bc83f7858199 · sha256:f81ebe442dedb247… · /containers/adp/0/affected/6
{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.5","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:106ada6a58875471d23fec3a85a1f7e05554bcad4c2645bce783bc83f7858199 · sha256:f81ebe442dedb247… · /containers/adp/0/affected/5
{"defaultStatus":"unknown","product":"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:106ada6a58875471d23fec3a85a1f7e05554bcad4c2645bce783bc83f7858199 · sha256:f81ebe442dedb247… · /containers/adp/0/affected/8
{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:106ada6a58875471d23fec3a85a1f7e05554bcad4c2645bce783bc83f7858199 · sha256:f81ebe442dedb247… · /containers/adp/0/affected/0
{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:106ada6a58875471d23fec3a85a1f7e05554bcad4c2645bce783bc83f7858199 · sha256:f81ebe442dedb247… · /containers/adp/0/affected/2
{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.5","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:106ada6a58875471d23fec3a85a1f7e05554bcad4c2645bce783bc83f7858199 · sha256:f81ebe442dedb247… · /containers/adp/0/affected/7
{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.5","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:106ada6a58875471d23fec3a85a1f7e05554bcad4c2645bce783bc83f7858199 · sha256:f81ebe442dedb247… · /containers/adp/0/affected/3
{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.5","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:106ada6a58875471d23fec3a85a1f7e05554bcad4c2645bce783bc83f7858199 · sha256:f81ebe442dedb247… · /containers/adp/0/affected/1

Source references

10 source assertions
{"url":"https://cert-portal.siemens.com/productcert/html/ssa-019113.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:106ada6a58875471d23fec3a85a1f7e05554bcad4c2645bce783bc83f7858199 · sha256:f81ebe442dedb247… · /containers/adp/0/references/1
{"url":"https://cert-portal.siemens.com/productcert/html/ssa-082556.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:106ada6a58875471d23fec3a85a1f7e05554bcad4c2645bce783bc83f7858199 · sha256:f81ebe442dedb247… · /containers/adp/0/references/0
{"url":"https://git.kernel.org/stable/c/003343985f26dfefd0c94b1fe1316a2de74428b9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:106ada6a58875471d23fec3a85a1f7e05554bcad4c2645bce783bc83f7858199 · sha256:f81ebe442dedb247… · /containers/cna/references/5
{"url":"https://git.kernel.org/stable/c/12aa4b73a67d95bc739995a2d6943aec2f9785c9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:106ada6a58875471d23fec3a85a1f7e05554bcad4c2645bce783bc83f7858199 · sha256:f81ebe442dedb247… · /containers/cna/references/6
{"url":"https://git.kernel.org/stable/c/66117dbb3dbae82f86735bf727b1d59cc677afa1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:106ada6a58875471d23fec3a85a1f7e05554bcad4c2645bce783bc83f7858199 · sha256:f81ebe442dedb247… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/9f036aa0fe46c19e938f03d10e02c23f4fffae5e"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:106ada6a58875471d23fec3a85a1f7e05554bcad4c2645bce783bc83f7858199 · sha256:f81ebe442dedb247… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/a05a2149386f6dfb4245f522acdbef892acafc84"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:106ada6a58875471d23fec3a85a1f7e05554bcad4c2645bce783bc83f7858199 · sha256:f81ebe442dedb247… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/b3a6df291fecf5f8a308953b65ca72b7fc9e015d"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:106ada6a58875471d23fec3a85a1f7e05554bcad4c2645bce783bc83f7858199 · sha256:f81ebe442dedb247… · /containers/cna/references/7
{"url":"https://git.kernel.org/stable/c/ba7c9ddcdd077942b798979edb035207374d4096"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:106ada6a58875471d23fec3a85a1f7e05554bcad4c2645bce783bc83f7858199 · sha256:f81ebe442dedb247… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/dfc96ae0074cc47b5478a59e5aa19233e434243f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:106ada6a58875471d23fec3a85a1f7e05554bcad4c2645bce783bc83f7858199 · sha256:f81ebe442dedb247… · /containers/cna/references/0

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.

← Back to CVE Explorer