{"affected":[{"defaultStatus":"unaffected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"lessThan":"9222672fa6370f0ec3d899662cb8680e9282fc4c","status":"affected","version":"754b8a21a96d5f11712245aef907149606b323ae","versionType":"git"},{"lessThan":"8c7a32b7c15555beddc5810c3334d9cefff061bf","status":"affected","version":"754b8a21a96d5f11712245aef907149606b323ae","versionType":"git"},{"lessThan":"340fbdc8011f2dc678f622c5ce1cbb5ab8305de7","status":"affected","version":"754b8a21a96d5f11712245aef907149606b323ae","versionType":"git"},{"lessThan":"8d7fe9ad6fddc2af8bde4b921b4f8fab231ed38c","status":"affected","version":"754b8a21a96d5f11712245aef907149606b323ae","versionType":"git"},{"lessThan":"57ee40f1b198b59d43c216fbc4672f9300d3c8b0","status":"affected","version":"754b8a21a96d5f11712245aef907149606b323ae","versionType":"git"},{"lessThan":"8af52fe9fd3bf5e7478da99193c0632276e1dfce","status":"affected","version":"754b8a21a96d5f11712245aef907149606b323ae","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"status":"affected","version":"4.16"},{"lessThan":"4.16","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"4.19.*","status":"unaffected","version":"4.19.250","versionType":"semver"},{"lessThanOrEqual":"5.4.*","status":"unaffected","version":"5.4.202","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.127","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.51","versionType":"semver"},{"lessThanOrEqual":"5.18.*","status":"unaffected","version":"5.18.8","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"5.19","versionType":"original_commit_for_fix"}]}],"cveId":"CVE-2022-49687","cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nvirtio_net: fix xdp_rxq_info bug after suspend/resume\n\nThe following sequence currently causes a driver bug warning\nwhen using virtio_net:\n\n  # ip link set eth0 up\n  # echo mem > /sys/power/state (or e.g. # rtcwake -s 10 -m mem)\n  <resume>\n  # ip link set eth0 down\n\n  Missing register, driver bug\n  WARNING: CPU: 0 PID: 375 at net/core/xdp.c:138 xdp_rxq_info_unreg+0x58/0x60\n  Call trace:\n   xdp_rxq_info_unreg+0x58/0x60\n   virtnet_close+0x58/0xac\n   __dev_close_many+0xac/0x140\n   __dev_change_flags+0xd8/0x210\n   dev_change_flags+0x24/0x64\n   do_setlink+0x230/0xdd0\n   ...\n\nThis happens because virtnet_freeze() frees the receive_queue\ncompletely (including struct xdp_rxq_info) but does not call\nxdp_rxq_info_unreg(). Similarly, virtnet_restore() sets up the\nreceive_queue again but does not call xdp_rxq_info_reg().\n\nActually, parts of virtnet_freeze_down() and virtnet_restore_up()\nare almost identical to virtnet_close() and virtnet_open(): only\nthe calls to xdp_rxq_info_(un)reg() are missing. This means that\nwe can fix this easily and avoid such problems in the future by\njust calling virtnet_close()/open() from the freeze/restore handlers.\n\nAside from adding the missing xdp_rxq_info calls the only difference\nis that the refill work is only cancelled if netif_running(). However,\nthis should not make any functional difference since the refill work\nshould only be active if the network interface is actually up.","epss":{"date":"2026-11-05","percentile":0.21581,"score":0.00289},"exploits":[],"kev":null,"metrics":[],"modifiedAt":1793908181990,"publishedAt":1740536653187,"references":[{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/9222672fa6370f0ec3d899662cb8680e9282fc4c"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/8c7a32b7c15555beddc5810c3334d9cefff061bf"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/340fbdc8011f2dc678f622c5ce1cbb5ab8305de7"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/8d7fe9ad6fddc2af8bde4b921b4f8fab231ed38c"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/57ee40f1b198b59d43c216fbc4672f9300d3c8b0"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/8af52fe9fd3bf5e7478da99193c0632276e1dfce"}],"remediation":[],"revision":"761981f4457fa759e4b359af676a9b96ec712592a0fe4ce2b3e22ca30a202d57","sources":[{"modifiedAt":1793908181990,"name":"CNA: Linux","retrievedAt":1793909387216,"url":"https://www.cve.org/CVERecord?id=CVE-2022-49687"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793909408241,"url":"https://api.first.org/data/v1/epss?cve=CVE-2022-49687"}],"ssvc":{"assessedAt":1793908007424,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"virtio_net: fix xdp_rxq_info bug after suspend/resume","updatedAt":1793909408241}