{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49290","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-02-26T01:49:39.302Z","datePublished":"2025-02-26T01:56:27.500Z","dateUpdated":"2026-08-05T08:54:38.170Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-05T08:54:38.170Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmac80211: fix potential double free on mesh join\n\nWhile commit 6a01afcf8468 (\"mac80211: mesh: Free ie data when leaving\nmesh\") fixed a memory leak on mesh leave / teardown it introduced a\npotential memory corruption caused by a double free when rejoining the\nmesh:\n\n  ieee80211_leave_mesh()\n  -> kfree(sdata->u.mesh.ie);\n  ...\n  ieee80211_join_mesh()\n  -> copy_mesh_setup()\n     -> old_ie = ifmsh->ie;\n     -> kfree(old_ie);\n\nThis double free / kernel panics can be reproduced by using wpa_supplicant\nwith an encrypted mesh (if set up without encryption via \"iw\" then\nifmsh->ie is always NULL, which avoids this issue). And then calling:\n\n  $ iw dev mesh0 mesh leave\n  $ iw dev mesh0 mesh join my-mesh\n\nNote that typically these commands are not used / working when using\nwpa_supplicant. And it seems that wpa_supplicant or wpa_cli are going\nthrough a NETDEV_DOWN/NETDEV_UP cycle between a mesh leave and mesh join\nwhere the NETDEV_UP resets the mesh.ie to NULL via a memcpy of\ndefault_mesh_setup in cfg80211_netdev_notifier_call, which then avoids\nthe memory corruption, too.\n\nThe issue was first observed in an application which was not using\nwpa_supplicant but \"Senf\" instead, which implements its own calls to\nnl80211.\n\nFixing the issue by removing the kfree()'ing of the mesh IE in the mesh\njoin function and leaving it solely up to the mesh leave to free the\nmesh IE."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:L - The bug is triggered only via local nl80211 netlink commands (NL80211_CMD_LEAVE_MESH then NL80211_CMD_JOIN_MESH), not by processing frames from a wireless peer.\nAC:L - An attacker who can issue mesh leave/join fully controls both steps and can ensure mesh.ie was allocated (e.g. by joining with NL80211_MESH_SETUP_IE), so the double free is reliably reproducible with no race or external condition.\nPR:L - JOIN_MESH/LEAVE_MESH (and NEW_INTERFACE) require only GENL_UNS_ADMIN_PERM, i.e. CAP_NET_ADMIN in the local user namespace, which an unprivileged user can obtain via user namespaces on systems with a mesh-capable wiphy.\nUI:N - Exploitation requires no victim action; the attacker directly issues the leave and rejoin netlink operations.\nS:U - Impact is confined to the host kernel’s own memory allocator and privilege boundary; this is not a VM/IOMMU/sandbox escape across security authorities.\nC:H - A kernel heap double free is memory corruption that can be leveraged (via controlled allocation between free and second free) for arbitrary read primitives and information disclosure.\nI:H - Double free of the attacker-sized mesh IE allocation enables classic heap exploitation for arbitrary write and control-flow hijacking / privilege escalation.\nA:H - The double free reliably causes kernel panic/oops (as documented in the fix), fully disrupting system availability."}]}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/mac80211/cfg.c"],"versions":[{"version":"3212d6248faf0efce6b7a718e198feecce0eea05","lessThan":"615716af8644813355e014314a0bc1e961250f5a","status":"affected","versionType":"git"},{"version":"86e7d4cd2ed5f4b0188afce8199faffcf1ae7c7e","lessThan":"c1d9c3628ef0a0ca197595d0f9e01cd3b5dda186","status":"affected","versionType":"git"},{"version":"37bccfa89559a70c044b5ccde3c916a91388e14a","lessThan":"273ebddc5fda2967492cb0b6cdd7d81cfb821b76","status":"affected","versionType":"git"},{"version":"3f15e3e62c80e180282f0cbc5559264e11c328b7","lessThan":"3bbd0000d012f92aec423b224784fbf0f7bf40f8","status":"affected","versionType":"git"},{"version":"6a01afcf8468d3ca2bd8bbb27503f60dcf643b20","lessThan":"5d3ff9542a40ce034416bca03864709540a36016","status":"affected","versionType":"git"},{"version":"6a01afcf8468d3ca2bd8bbb27503f60dcf643b20","lessThan":"12e407a8ef17623823fd0c066fbd7f103953d28d","status":"affected","versionType":"git"},{"version":"6a01afcf8468d3ca2bd8bbb27503f60dcf643b20","lessThan":"582d8c60c0c053684f7138875e8150d5749ffc17","status":"affected","versionType":"git"},{"version":"6a01afcf8468d3ca2bd8bbb27503f60dcf643b20","lessThan":"46bb87d40683337757a2f902fcd4244b32bb4e86","status":"affected","versionType":"git"},{"version":"6a01afcf8468d3ca2bd8bbb27503f60dcf643b20","lessThan":"4a2d4496e15ea5bb5c8e83b94ca8ca7fb045e7d3","status":"affected","versionType":"git"},{"version":"12e9cb1e7c93413112260991d094cfda712fdc97","status":"affected","versionType":"git"},{"version":"4f3193e08602462a806e8f53212e79c60a6f7488","status":"affected","versionType":"git"},{"version":"4.9.233","lessThan":"4.9.309","status":"affected","versionType":"semver"},{"version":"4.14.192","lessThan":"4.14.274","status":"affected","versionType":"semver"},{"version":"4.19.137","lessThan":"4.19.237","status":"affected","versionType":"semver"},{"version":"5.4.56","lessThan":"5.4.188","status":"affected","versionType":"semver"},{"version":"4.4.233","lessThan":"4.5","status":"affected","versionType":"semver"},{"version":"5.7.13","lessThan":"5.8","status":"affected","versionType":"semver"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/mac80211/cfg.c"],"versions":[{"version":"5.8","status":"affected"},{"version":"0","lessThan":"5.8","status":"unaffected","versionType":"semver"},{"version":"4.9.309","lessThanOrEqual":"4.9.*","status":"unaffected","versionType":"semver"},{"version":"4.14.274","lessThanOrEqual":"4.14.*","status":"unaffected","versionType":"semver"},{"version":"4.19.237","lessThanOrEqual":"4.19.*","status":"unaffected","versionType":"semver"},{"version":"5.4.188","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.109","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.32","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"5.16.18","lessThanOrEqual":"5.16.*","status":"unaffected","versionType":"semver"},{"version":"5.17.1","lessThanOrEqual":"5.17.*","status":"unaffected","versionType":"semver"},{"version":"5.18","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9.233","versionEndExcluding":"4.9.309"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14.192","versionEndExcluding":"4.14.274"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19.137","versionEndExcluding":"4.19.237"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4.56","versionEndExcluding":"5.4.188"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"5.10.109"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"5.15.32"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"5.16.18"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"5.17.1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"5.18"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.4.233"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7.13"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/615716af8644813355e014314a0bc1e961250f5a"},{"url":"https://git.kernel.org/stable/c/c1d9c3628ef0a0ca197595d0f9e01cd3b5dda186"},{"url":"https://git.kernel.org/stable/c/273ebddc5fda2967492cb0b6cdd7d81cfb821b76"},{"url":"https://git.kernel.org/stable/c/3bbd0000d012f92aec423b224784fbf0f7bf40f8"},{"url":"https://git.kernel.org/stable/c/5d3ff9542a40ce034416bca03864709540a36016"},{"url":"https://git.kernel.org/stable/c/12e407a8ef17623823fd0c066fbd7f103953d28d"},{"url":"https://git.kernel.org/stable/c/582d8c60c0c053684f7138875e8150d5749ffc17"},{"url":"https://git.kernel.org/stable/c/46bb87d40683337757a2f902fcd4244b32bb4e86"},{"url":"https://git.kernel.org/stable/c/4a2d4496e15ea5bb5c8e83b94ca8ca7fb045e7d3"}],"title":"mac80211: fix potential double free on mesh join","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.8,"attackVector":"LOCAL","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"id":"CVE-2022-49290","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"version":"2.0.3","timestamp":"2025-10-01T19:45:11.938129Z"}}}],"problemTypes":[{"descriptions":[{"lang":"en","type":"CWE","cweId":"CWE-415","description":"CWE-415 Double Free"}]}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-10-01T19:47:00.523Z"}}]}}