{"id":"CVE-2026-80677","title":"In the Linux kernel, the following vulnerability has been resolved:\n\ndriver core: use READ_ONCE() for dev->driver in dev_has_sync_state()\n\ndev_has_sync_state() reads dev->driver twice without holding\ndevice_lock() -- once for the NULL ch…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ndriver core: use READ_ONCE() for dev->driver in dev_has_sync_state()\n\ndev_has_sync_state() reads dev->driver twice without holding\ndevice_lock() -- once for the NULL ch…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-476"],"vendor":"Linux","product":"Linux","affected":["Linux >= ac338acf514e7b578fa9e3742ec2c292323b4c1a < 89789e4c141904506163dcb91c7289a074573931","Linux >= ac338acf514e7b578fa9e3742ec2c292323b4c1a < 51b3e1de53ee5b7775c7ff90e67fdb2665fce938","Linux >= ac338acf514e7b578fa9e3742ec2c292323b4c1a < 358697929351f619143f59c6a8a15a4994748b79","Linux >= ac338acf514e7b578fa9e3742ec2c292323b4c1a < 5e79e0180515b31b2e2244dc3d256fd8b5a07021","Linux >= ac338acf514e7b578fa9e3742ec2c292323b4c1a < 860885fcd2611bca8c28dac8b2c1c7ff160f763e","Linux >= ac338acf514e7b578fa9e3742ec2c292323b4c1a < cc77f0d91e3214e4292208f02a1dc09a31f9aac7","Linux >= ac338acf514e7b578fa9e3742ec2c292323b4c1a < 9b0f4082a09760939588135d60a8e9cc994bfa3e","Linux >= ac338acf514e7b578fa9e3742ec2c292323b4c1a < e9506871a8ea304cde48ff4a57226df2aadddae3","Linux 6d88283a49425eb469aa60ffebe76539e73c933e","Linux >= 5.5.13 < 5.6","Linux 5.6"],"published":"2026-08-28","updated":"2026-10-16","sourceUpdated":"2026-10-16T20:18:05.790","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-80677","references":[{"url":"https://git.kernel.org/stable/c/358697929351f619143f59c6a8a15a4994748b79","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/51b3e1de53ee5b7775c7ff90e67fdb2665fce938","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/5e79e0180515b31b2e2244dc3d256fd8b5a07021","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/860885fcd2611bca8c28dac8b2c1c7ff160f763e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/89789e4c141904506163dcb91c7289a074573931","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/9b0f4082a09760939588135d60a8e9cc994bfa3e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/cc77f0d91e3214e4292208f02a1dc09a31f9aac7","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e9506871a8ea304cde48ff4a57226df2aadddae3","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80677.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-80677"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2525370"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80677"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80677"},{"url":"https://lore.kernel.org/linux-cve-announce/2026082849-CVE-2026-80677-13a4@gregkh/T"}],"tags":["nvd","cve.org","csaf","vex","red-hat","score-dispute"],"epss":0.00176,"epssPercentile":0.07053,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T19:19:40.926769Z"},"scores":{"nvd":7.8,"vendor":5.5},"ingestedAt":"2026-08-30T04:47:10.289Z","slug":"CVE-2026-80677","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ndriver core: use READ_ONCE() for dev->driver in dev_has_sync_state()\n\ndev_has_sync_state() reads dev->driver twice without holding\ndevice_lock() -- once for the NULL check and once to dereference\n->sync_state. Some callers only hold device_links_write_lock, which\ndoesn't prevent a concurrent unbind from clearing dev->driver via\ndevice_unbind_cleanup().\n\nFix it by reading dev->driver exactly once with READ_ONCE(), pairing\nwith the WRITE_ONCE() in device_set_driver().\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · updated 2026-10-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80677.json)","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}