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CVE-2026-31780

In the Linux kernel, the following vulnerability has been resolved: wifi: wilc1000: fix u8 overflow in SSID scan buffer size calculation The variable valuesize is declared as u8 but accumulates the total length of all SSIDs to scan. Each SSID contributes up to 33 bytes (IEEE80211_MAX_SSID_LEN + 1), and with WILC_MAX_NUM_PROBED_SSID (10) SSIDs the total can reach 330, which wraps around to 74 when stored in a u8. This causes kmalloc to allocate only 75 bytes while the subsequent memcpy writes
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:0ecad9a771bf7d8c47fce819979a5c984433d47a863f7309d0ce423a74e371c1
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/wireless/microchip/wilc1000/hif.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.2"},{"lessThan":"4.2","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":"6.1.168","versionTyp…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:62154e636d3b0c281a0d09893cba03fd9a46282d125da6563e1790147831d50d · sha256:09bf705c63778986… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/wireless/microchip/wilc1000/hif.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"34a23fd9ddd683a03c7e8cc0ceded3e59e354b99","status":"affected","version":"c5c77ba18ea66aa05441c71e38473efb787705a4","versionType":"git"},{"lessThan":"549f02d8ec94d39092ab6d9b103d0d6783a4b024","status":"affected","version":"c5c77ba18ea66aa05441c71e38473efb787705a4","versionType":"git"},{"lessThan":"bfbddeadd4779651403035ee177ae2f22f9f5521","status":"affected","version":"…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:62154e636d3b0c281a0d09893cba03fd9a46282d125da6563e1790147831d50d · sha256:09bf705c63778986… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/wireless/microchip/wilc1000/hif.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.2"},{"lessThan":"4.2","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":"6.1.168","versionTyp…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:62154e636d3b0c281a0d09893cba03fd9a46282d125da6563e1790147831d50d · sha256:09bf705c63778986… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/wireless/microchip/wilc1000/hif.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"34a23fd9ddd683a03c7e8cc0ceded3e59e354b99","status":"affected","version":"c5c77ba18ea66aa05441c71e38473efb787705a4","versionType":"git"},{"lessThan":"549f02d8ec94d39092ab6d9b103d0d6783a4b024","status":"affected","version":"c5c77ba18ea66aa05441c71e38473efb787705a4","versionType":"git"},{"lessThan":"bfbddeadd4779651403035ee177ae2f22f9f5521","status":"affected","version":"…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:62154e636d3b0c281a0d09893cba03fd9a46282d125da6563e1790147831d50d · sha256:09bf705c63778986… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/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:v2:62154e636d3b0c281a0d09893cba03fd9a46282d125da6563e1790147831d50d · sha256:09bf705c63778986… · /containers/cna/metrics/0/cvssV3_1

Source references

8 source assertions
{"url":"https://git.kernel.org/stable/c/0c7f21d8bd2f93998b72b7a7f93152336aeca4dd"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:62154e636d3b0c281a0d09893cba03fd9a46282d125da6563e1790147831d50d · sha256:09bf705c63778986… · /containers/cna/references/6
{"url":"https://git.kernel.org/stable/c/34a23fd9ddd683a03c7e8cc0ceded3e59e354b99"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:62154e636d3b0c281a0d09893cba03fd9a46282d125da6563e1790147831d50d · sha256:09bf705c63778986… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/549f02d8ec94d39092ab6d9b103d0d6783a4b024"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:62154e636d3b0c281a0d09893cba03fd9a46282d125da6563e1790147831d50d · sha256:09bf705c63778986… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/9907ac9b9a18b92fc34b9e4cb9e10f208dc1d3f7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:62154e636d3b0c281a0d09893cba03fd9a46282d125da6563e1790147831d50d · sha256:09bf705c63778986… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/bfbddeadd4779651403035ee177ae2f22f9f5521"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:62154e636d3b0c281a0d09893cba03fd9a46282d125da6563e1790147831d50d · sha256:09bf705c63778986… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/c97b2a00059608592ad0d86fbb813a4f8cf9464b"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:62154e636d3b0c281a0d09893cba03fd9a46282d125da6563e1790147831d50d · sha256:09bf705c63778986… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/d049e56b1739101d1c4d81deedb269c52a8dbba0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:62154e636d3b0c281a0d09893cba03fd9a46282d125da6563e1790147831d50d · sha256:09bf705c63778986… · /containers/cna/references/7
{"url":"https://git.kernel.org/stable/c/d8388614de613c28eeb659c10115060a83739924"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:62154e636d3b0c281a0d09893cba03fd9a46282d125da6563e1790147831d50d · sha256:09bf705c63778986… · /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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