{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49025","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-08-22T01:27:53.650Z","datePublished":"2024-10-21T20:06:31.189Z","dateUpdated":"2026-08-05T08:53:31.402Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-05T08:53:31.402Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Fix use-after-free when reverting termination table\n\nWhen having multiple dests with termination tables and second one\nor afterwards fails the driver reverts usage of term tables but\ndoesn't reset the assignment in attr->dests[num_vport_dests].termtbl\nwhich case a use-after-free when releasing the rule.\nFix by resetting the assignment of termtbl to null."}],"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 reached by installing/deleting a TC flower rule via rtnetlink (tc_new_tfilter → mlx5e_configure_flower → mlx5_eswitch_add_offloaded_rule → mlx5_eswitch_add_termtbl_rule), which is a local netlink/syscall path, not remote packet processing.\nAC:L - An attacker who can add multi-destination VLAN-push/hairpin TC flower rules can force the revert path (e.g., by exhausting memory so a later termtbl get_create fails) and then delete the successfully fallback-installed rule; this is a deterministic error-path UAF with no race outside attacker control.\nPR:L - Creating and deleting these TC flower filters requires CAP_NET_ADMIN checked via netlink_net_capable()/ns_capable() in the network namespace's user_ns, which is obtainable through user namespaces (unshare -Urn), matching prior mlx5e FDB TC scoring (e.g., CVE-2023-52487).\nUI:N - No victim interaction is required; the attacker installs the multi-dest termination-table rule and later deletes it entirely on their own.\nS:U - Impact is confined to the host kernel that owns the mlx5 eswitch offload state; this is a same-authority kernel UAF with no VM escape, IOMMU bypass, or other cross-boundary effect.\nC:H - On rule release, __mlx5_eswitch_del_rule calls mlx5_eswitch_termtbl_put() on the dangling attr->dests[].termtbl pointer after the handle was already freed during revert, yielding a classic heap UAF that enables arbitrary kernel memory disclosure.\nI:H - The same use-after-free of mlx5_termtbl_handle allows heap spray/reclaim and corruption of subsequent allocations, providing write and control-flow hijack primitives suitable for privilege escalation.\nA:H - Any use-after-free is treated as high availability impact; exercising the dangling termtbl pointer on rule teardown can oops/panic the kernel even when not fully exploited for code execution."}]}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads_termtbl.c"],"versions":[{"version":"10caabdaad5ace85577a453da97d1f8d3b944427","lessThan":"0a2d73a77060c3cbdc6e801cd5d979d674cd404b","status":"affected","versionType":"git"},{"version":"10caabdaad5ace85577a453da97d1f8d3b944427","lessThan":"0d2f9d95d9fbe993f3c4bafb87d59897b0325aff","status":"affected","versionType":"git"},{"version":"10caabdaad5ace85577a453da97d1f8d3b944427","lessThan":"372eb550faa0757349040fd43f59483cbfdb2c0b","status":"affected","versionType":"git"},{"version":"10caabdaad5ace85577a453da97d1f8d3b944427","lessThan":"e6d2d26a49c3a9cd46b232975e45236304810904","status":"affected","versionType":"git"},{"version":"10caabdaad5ace85577a453da97d1f8d3b944427","lessThan":"52c795af04441d76f565c4634f893e5b553df2ae","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads_termtbl.c"],"versions":[{"version":"5.3","status":"affected"},{"version":"0","lessThan":"5.3","status":"unaffected","versionType":"semver"},{"version":"5.4.226","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.158","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.82","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.0.12","lessThanOrEqual":"6.0.*","status":"unaffected","versionType":"semver"},{"version":"6.1","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":"5.3","versionEndExcluding":"5.4.226"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"5.10.158"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"5.15.82"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"6.0.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"6.1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/0a2d73a77060c3cbdc6e801cd5d979d674cd404b"},{"url":"https://git.kernel.org/stable/c/0d2f9d95d9fbe993f3c4bafb87d59897b0325aff"},{"url":"https://git.kernel.org/stable/c/372eb550faa0757349040fd43f59483cbfdb2c0b"},{"url":"https://git.kernel.org/stable/c/e6d2d26a49c3a9cd46b232975e45236304810904"},{"url":"https://git.kernel.org/stable/c/52c795af04441d76f565c4634f893e5b553df2ae"}],"title":"net/mlx5e: Fix use-after-free when reverting termination table","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2022-49025","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-10-22T13:12:03.785297Z"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-10-22T13:18:36.599Z"}}]}}