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CVE-2026-43421

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_ncm: Fix net_device lifecycle with device_move The network device outlived its parent gadget device during disconnection, resulting in dangling sysfs links and null pointer dereference problems. A prior attempt to solve this by removing SET_NETDEV_DEV entirely [1] was reverted due to power management ordering concerns and a NO-CARRIER regression. A subsequent attempt to defer net_device allocation to bind [2]
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:0437a9216780695b9c6187cca77119ce9ede4b3de2c176db1facec550ad75a46
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/usb/gadget/function/f_ncm.c","drivers/usb/gadget/function/u_ether.c","drivers/usb/gadget/function/u_ether.h","drivers/usb/gadget/function/u_ncm.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"7c97366f5dac5255e60a317ffe3a5b18f3745547","status":"affected","version":"40d133d7f542616cf9538508a372306e626a16e9","versionType":"git"},{"lessThan":"36c41e9724c9a7a7cda37f5a4e9d94f25c8031c4","status":"affected","version":"40d133d7f542616cf9538508a372306e626a16e9"…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:09598b984d31d51080ed85c00a1546fbbcc5a3a73aa56811bd6a1903cdcebb7b · sha256:7c823d4264f98fc2… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/usb/gadget/function/f_ncm.c","drivers/usb/gadget/function/u_ether.c","drivers/usb/gadget/function/u_ether.h","drivers/usb/gadget/function/u_ncm.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.11"},{"lessThan":"3.11","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…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:09598b984d31d51080ed85c00a1546fbbcc5a3a73aa56811bd6a1903cdcebb7b · sha256:7c823d4264f98fc2… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/usb/gadget/function/f_ncm.c","drivers/usb/gadget/function/u_ether.c","drivers/usb/gadget/function/u_ether.h","drivers/usb/gadget/function/u_ncm.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"7c97366f5dac5255e60a317ffe3a5b18f3745547","status":"affected","version":"40d133d7f542616cf9538508a372306e626a16e9","versionType":"git"},{"lessThan":"36c41e9724c9a7a7cda37f5a4e9d94f25c8031c4","status":"affected","version":"40d133d7f542616cf9538508a372306e626a16e9"…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:09598b984d31d51080ed85c00a1546fbbcc5a3a73aa56811bd6a1903cdcebb7b · sha256:7c823d4264f98fc2… · /containers/cna/affected/0
{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/usb/gadget/function/f_ncm.c","drivers/usb/gadget/function/u_ether.c","drivers/usb/gadget/function/u_ether.h","drivers/usb/gadget/function/u_ncm.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.11"},{"lessThan":"3.11","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…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:09598b984d31d51080ed85c00a1546fbbcc5a3a73aa56811bd6a1903cdcebb7b · sha256:7c823d4264f98fc2… · /containers/cna/affected/1

Source references

6 source assertions
{"url":"https://git.kernel.org/stable/c/36c41e9724c9a7a7cda37f5a4e9d94f25c8031c4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:09598b984d31d51080ed85c00a1546fbbcc5a3a73aa56811bd6a1903cdcebb7b · sha256:7c823d4264f98fc2… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/7c97366f5dac5255e60a317ffe3a5b18f3745547"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:09598b984d31d51080ed85c00a1546fbbcc5a3a73aa56811bd6a1903cdcebb7b · sha256:7c823d4264f98fc2… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/85acaba2f42b557499bab3608307f17bf13beb69"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:09598b984d31d51080ed85c00a1546fbbcc5a3a73aa56811bd6a1903cdcebb7b · sha256:7c823d4264f98fc2… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/93f116c3393a22acab96ad1bef12b2572eb80ca4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:09598b984d31d51080ed85c00a1546fbbcc5a3a73aa56811bd6a1903cdcebb7b · sha256:7c823d4264f98fc2… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/e584cb58a2ea7ff4d3a4bc43d5ca512ed3ecb77d"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:09598b984d31d51080ed85c00a1546fbbcc5a3a73aa56811bd6a1903cdcebb7b · sha256:7c823d4264f98fc2… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/ec35c1969650e7cb6c8a91020e568ed46e3551b0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:09598b984d31d51080ed85c00a1546fbbcc5a3a73aa56811bd6a1903cdcebb7b · sha256:7c823d4264f98fc2… · /containers/cna/references/5

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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