{"api_version":"1","generated_at":"2026-08-14T13:36:22+00:00","cve":"CVE-2026-64571","urls":{"html":"https://cve.report/CVE-2026-64571","api":"https://cve.report/api/cve/CVE-2026-64571.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64571","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64571"},"summary":{"title":"wifi: p54: validate RX frame length in p54_rx_eeprom_readback()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: p54: validate RX frame length in p54_rx_eeprom_readback()\n\np54_rx_eeprom_readback() copies the requested EEPROM slice out of a\ndevice-supplied readback frame without checking that the skb actually holds\nthat many bytes. Commit da1b9a55ff11 (\"wifi: p54: prevent buffer-overflow in\np54_rx_eeprom_readback()\") closed the destination overflow by copying a\nfixed priv->eeprom_slice_size (and rejecting a mismatched advertised len),\nbut the source side is still unbounded: nothing verifies the frame is long\nenough to supply that many bytes.\n\nA malicious USB device can send a short frame whose advertised len matches\npriv->eeprom_slice_size while the payload is truncated. The equality check\npasses and memcpy() reads past the end of the skb, leaking adjacent heap:\n\n  BUG: KASAN: slab-out-of-bounds in p54_rx (drivers/net/wireless/intersil/p54/txrx.c:507)\n  Read of size 1016 at addr ffff88800f077114 by task swapper/0/0\n  Call Trace:\n   <IRQ>\n   ...\n   __asan_memcpy (mm/kasan/shadow.c:105)\n   p54_rx (drivers/net/wireless/intersil/p54/txrx.c:507)\n   p54u_rx_cb (drivers/net/wireless/intersil/p54/p54usb.c:163)\n   __usb_hcd_giveback_urb (drivers/usb/core/hcd.c:1657)\n   dummy_timer (drivers/usb/gadget/udc/dummy_hcd.c:2005)\n   ...\n   </IRQ>\n\n  The buggy address belongs to the object at ffff88800f0770c0\n   which belongs to the cache skbuff_small_head of size 704\n  The buggy address is located 84 bytes inside of\n   allocated 704-byte region [ffff88800f0770c0, ffff88800f077380)\n\nCheck that the slice fits in the skb before copying.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-05 08:16:36","updated_at":"2026-08-05 08:16:36"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/25c3b85af3fc4f8043159b14e65790fc3bbdaf48","name":"https://git.kernel.org/stable/c/25c3b85af3fc4f8043159b14e65790fc3bbdaf48","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ebd6d37fa94bee929e0b4c9ca19fdf9b1dcf6cea","name":"https://git.kernel.org/stable/c/ebd6d37fa94bee929e0b4c9ca19fdf9b1dcf6cea","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/9096e1f7014174067239a63df18ae5f28301990d","name":"https://git.kernel.org/stable/c/9096e1f7014174067239a63df18ae5f28301990d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f46f8f9c43fd02f4dd5f716d4bda296a523c04f0","name":"https://git.kernel.org/stable/c/f46f8f9c43fd02f4dd5f716d4bda296a523c04f0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d38f5d868a0a4770e3bcd0925e16c46acdbc9509","name":"https://git.kernel.org/stable/c/d38f5d868a0a4770e3bcd0925e16c46acdbc9509","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64571","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64571","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7cb770729ba895f73253dfcd46c3fcba45d896f9 25c3b85af3fc4f8043159b14e65790fc3bbdaf48 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7cb770729ba895f73253dfcd46c3fcba45d896f9 f46f8f9c43fd02f4dd5f716d4bda296a523c04f0 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7cb770729ba895f73253dfcd46c3fcba45d896f9 d38f5d868a0a4770e3bcd0925e16c46acdbc9509 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7cb770729ba895f73253dfcd46c3fcba45d896f9 9096e1f7014174067239a63df18ae5f28301990d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7cb770729ba895f73253dfcd46c3fcba45d896f9 ebd6d37fa94bee929e0b4c9ca19fdf9b1dcf6cea git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2.6.28","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 2.6.28 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.148 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.101 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.42 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.6 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc4 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"64571","cve":"CVE-2026-64571","epss":"0.001560000","percentile":"0.052520000","score_date":"2026-08-09","updated_at":"2026-08-10 00:07:38"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/wireless/intersil/p54/txrx.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"25c3b85af3fc4f8043159b14e65790fc3bbdaf48","status":"affected","version":"7cb770729ba895f73253dfcd46c3fcba45d896f9","versionType":"git"},{"lessThan":"f46f8f9c43fd02f4dd5f716d4bda296a523c04f0","status":"affected","version":"7cb770729ba895f73253dfcd46c3fcba45d896f9","versionType":"git"},{"lessThan":"d38f5d868a0a4770e3bcd0925e16c46acdbc9509","status":"affected","version":"7cb770729ba895f73253dfcd46c3fcba45d896f9","versionType":"git"},{"lessThan":"9096e1f7014174067239a63df18ae5f28301990d","status":"affected","version":"7cb770729ba895f73253dfcd46c3fcba45d896f9","versionType":"git"},{"lessThan":"ebd6d37fa94bee929e0b4c9ca19fdf9b1dcf6cea","status":"affected","version":"7cb770729ba895f73253dfcd46c3fcba45d896f9","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/wireless/intersil/p54/txrx.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.28"},{"lessThan":"2.6.28","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.148","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.101","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.42","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc4","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.148","versionStartIncluding":"2.6.28","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.101","versionStartIncluding":"2.6.28","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.42","versionStartIncluding":"2.6.28","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.6","versionStartIncluding":"2.6.28","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc4","versionStartIncluding":"2.6.28","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: p54: validate RX frame length in p54_rx_eeprom_readback()\n\np54_rx_eeprom_readback() copies the requested EEPROM slice out of a\ndevice-supplied readback frame without checking that the skb actually holds\nthat many bytes. Commit da1b9a55ff11 (\"wifi: p54: prevent buffer-overflow in\np54_rx_eeprom_readback()\") closed the destination overflow by copying a\nfixed priv->eeprom_slice_size (and rejecting a mismatched advertised len),\nbut the source side is still unbounded: nothing verifies the frame is long\nenough to supply that many bytes.\n\nA malicious USB device can send a short frame whose advertised len matches\npriv->eeprom_slice_size while the payload is truncated. The equality check\npasses and memcpy() reads past the end of the skb, leaking adjacent heap:\n\n  BUG: KASAN: slab-out-of-bounds in p54_rx (drivers/net/wireless/intersil/p54/txrx.c:507)\n  Read of size 1016 at addr ffff88800f077114 by task swapper/0/0\n  Call Trace:\n   <IRQ>\n   ...\n   __asan_memcpy (mm/kasan/shadow.c:105)\n   p54_rx (drivers/net/wireless/intersil/p54/txrx.c:507)\n   p54u_rx_cb (drivers/net/wireless/intersil/p54/p54usb.c:163)\n   __usb_hcd_giveback_urb (drivers/usb/core/hcd.c:1657)\n   dummy_timer (drivers/usb/gadget/udc/dummy_hcd.c:2005)\n   ...\n   </IRQ>\n\n  The buggy address belongs to the object at ffff88800f0770c0\n   which belongs to the cache skbuff_small_head of size 704\n  The buggy address is located 84 bytes inside of\n   allocated 704-byte region [ffff88800f0770c0, ffff88800f077380)\n\nCheck that the slice fits in the skb before copying."}],"providerMetadata":{"dateUpdated":"2026-08-05T08:08:08.466Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/25c3b85af3fc4f8043159b14e65790fc3bbdaf48"},{"url":"https://git.kernel.org/stable/c/f46f8f9c43fd02f4dd5f716d4bda296a523c04f0"},{"url":"https://git.kernel.org/stable/c/d38f5d868a0a4770e3bcd0925e16c46acdbc9509"},{"url":"https://git.kernel.org/stable/c/9096e1f7014174067239a63df18ae5f28301990d"},{"url":"https://git.kernel.org/stable/c/ebd6d37fa94bee929e0b4c9ca19fdf9b1dcf6cea"}],"title":"wifi: p54: validate RX frame length in p54_rx_eeprom_readback()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64571","datePublished":"2026-08-05T08:08:08.466Z","dateReserved":"2026-07-19T15:36:31.797Z","dateUpdated":"2026-08-05T08:08:08.466Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-05 08:16:36","lastModifiedDate":"2026-08-05 08:16:36","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64571","Ordinal":"1","Title":"wifi: p54: validate RX frame length in p54_rx_eeprom_readback()","CVE":"CVE-2026-64571","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64571","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: p54: validate RX frame length in p54_rx_eeprom_readback()\n\np54_rx_eeprom_readback() copies the requested EEPROM slice out of a\ndevice-supplied readback frame without checking that the skb actually holds\nthat many bytes. Commit da1b9a55ff11 (\"wifi: p54: prevent buffer-overflow in\np54_rx_eeprom_readback()\") closed the destination overflow by copying a\nfixed priv->eeprom_slice_size (and rejecting a mismatched advertised len),\nbut the source side is still unbounded: nothing verifies the frame is long\nenough to supply that many bytes.\n\nA malicious USB device can send a short frame whose advertised len matches\npriv->eeprom_slice_size while the payload is truncated. The equality check\npasses and memcpy() reads past the end of the skb, leaking adjacent heap:\n\n  BUG: KASAN: slab-out-of-bounds in p54_rx (drivers/net/wireless/intersil/p54/txrx.c:507)\n  Read of size 1016 at addr ffff88800f077114 by task swapper/0/0\n  Call Trace:\n   <IRQ>\n   ...\n   __asan_memcpy (mm/kasan/shadow.c:105)\n   p54_rx (drivers/net/wireless/intersil/p54/txrx.c:507)\n   p54u_rx_cb (drivers/net/wireless/intersil/p54/p54usb.c:163)\n   __usb_hcd_giveback_urb (drivers/usb/core/hcd.c:1657)\n   dummy_timer (drivers/usb/gadget/udc/dummy_hcd.c:2005)\n   ...\n   </IRQ>\n\n  The buggy address belongs to the object at ffff88800f0770c0\n   which belongs to the cache skbuff_small_head of size 704\n  The buggy address is located 84 bytes inside of\n   allocated 704-byte region [ffff88800f0770c0, ffff88800f077380)\n\nCheck that the slice fits in the skb before copying.","Type":"Description","Title":"wifi: p54: validate RX frame length in p54_rx_eeprom_readback()"}]}}}