Baitaphish
Security intelligence
SearchLatest briefing
CVE Explorer

CVE-2026-52937

In the Linux kernel, the following vulnerability has been resolved: tap: fix stack info leak in tap_ioctl() SIOCGIFHWADDR In the SIOCGIFHWADDR path, tap_ioctl() copies 16 bytes of an uninitialised on-stack struct sockaddr_storage to userspace via ifr_hwaddr, but netif_get_mac_address() only writes sa_family and dev->addr_len (6 for Ethernet) bytes, leaving sa_data[6..13] uninitialised. Those 8 trailing bytes leak kernel stack contents; SIOCGIFHWADDR on a macvtap chardev returns kernel .text a
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:db5c4eb0c07203c3c0ad61930fd1f89b5da8a2b457c3bcc25b75e81daf67a1b4
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":"affected","product":"Linux","programFiles":["drivers/net/tap.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.12"},{"lessThan":"5.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.34","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2c6b1a9eda72ea926f949322e133cffa0a9b41db08860cbc7f7369f0737bc188 · sha256:009635e5b42302bf… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/tap.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"719007c3492f0f1f9e9cdbed8ac45ba45bb13eeb","status":"affected","version":"3b23a32a63219f51a5298bc55a65ecee866e79d0","versionType":"git"},{"lessThan":"05305e832be7b9d65b2b72caacf7d850b3942b2a","status":"affected","version":"3b23a32a63219f51a5298bc55a65ecee866e79d0","versionType":"git"},{"lessThan":"bddc09212c24934643bd44fc794748d2bbb3b6cd","status":"affected","version":"3b23a32a63219f51a5298bc55a65…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2c6b1a9eda72ea926f949322e133cffa0a9b41db08860cbc7f7369f0737bc188 · sha256:009635e5b42302bf… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/tap.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.12"},{"lessThan":"5.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.34","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2c6b1a9eda72ea926f949322e133cffa0a9b41db08860cbc7f7369f0737bc188 · sha256:009635e5b42302bf… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/tap.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"719007c3492f0f1f9e9cdbed8ac45ba45bb13eeb","status":"affected","version":"3b23a32a63219f51a5298bc55a65ecee866e79d0","versionType":"git"},{"lessThan":"05305e832be7b9d65b2b72caacf7d850b3942b2a","status":"affected","version":"3b23a32a63219f51a5298bc55a65ecee866e79d0","versionType":"git"},{"lessThan":"bddc09212c24934643bd44fc794748d2bbb3b6cd","status":"affected","version":"3b23a32a63219f51a5298bc55a65…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2c6b1a9eda72ea926f949322e133cffa0a9b41db08860cbc7f7369f0737bc188 · sha256:009635e5b42302bf… · /containers/cna/affected/0

Source references

3 source assertions
{"url":"https://git.kernel.org/stable/c/05305e832be7b9d65b2b72caacf7d850b3942b2a"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2c6b1a9eda72ea926f949322e133cffa0a9b41db08860cbc7f7369f0737bc188 · sha256:009635e5b42302bf… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/719007c3492f0f1f9e9cdbed8ac45ba45bb13eeb"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2c6b1a9eda72ea926f949322e133cffa0a9b41db08860cbc7f7369f0737bc188 · sha256:009635e5b42302bf… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/bddc09212c24934643bd44fc794748d2bbb3b6cd"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2c6b1a9eda72ea926f949322e133cffa0a9b41db08860cbc7f7369f0737bc188 · sha256:009635e5b42302bf… · /containers/cna/references/2

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