{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-68128","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-07-30T09:28:09.370Z","datePublished":"2026-08-10T11:58:50.013Z","dateUpdated":"2026-08-17T04:59:19.746Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-17T04:59:19.746Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nice: reject out-of-range ptype in ice_parser_profile_init\n\nset_bit(rslt->ptype, prof->ptypes) operates on a DECLARE_BITMAP of\nICE_FLOW_PTYPE_MAX (1024) bits. Nothing prevents a malicious VF from\nproviding ptype >= 1024 through VIRTCHNL, resulting in a write past\nthe end of the bitmap and a kernel page fault.\n\nReproduced with a custom kernel module injecting a crafted\nVIRTCHNL_OP_ADD_RSS_CFG on E810-C QSFP (8086:1592),\nFW 4.91 0x800214af 1.3909.0, ICE COMMS DDP 1.3.53.0,\nkernel 7.1.0-rc1.\n\ncrash_parser: ice_parser_profile_init @ ffffffffc0d61b60\ncrash_parser: setting ptype=0xffff (max valid=1023)\ncrash_parser: calling ice_parser_profile_init -- expect OOB crash!\nBUG: kernel NULL pointer dereference, address: 0000000000000000\nOops: Oops: 0002 [#1] SMP NOPTI\nCPU: 56 UID: 0 PID: 165011 Comm: insmod Kdump: loaded Tainted: G S U OE 7.1.0-rc1 #1\nHardware name: Intel Corporation S2600BPB/S2600BPB\nRIP: 0010:ice_parser_profile_init+0x2d/0x1d0 [ice]\nCall Trace:\n <TASK>\n ? __pfx_ice_parser_profile_init+0x10/0x10 [ice]\n crash_init+0x127/0xff0 [crash_parser]\n do_one_initcall+0x45/0x310\n do_init_module+0x64/0x270\n init_module_from_file+0xcc/0xf0\n idempotent_init_module+0x17b/0x280\n __x64_sys_finit_module+0x6e/0xe0\n\nBail out early with -EINVAL when ptype is out of range."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:L - Exploitation requires a malicious SR-IOV VF (or guest with VF passthrough) to send VIRTCHNL_OP_ADD_RSS_CFG/ADD_FDIR_FILTER mailbox messages to the host PF driver; this is local device/mailbox access, not remote network packet processing.\nAC:L - A VF can craft a raw RSS/FDIR packet pattern that leaves ice_ptype_resolve() returning U16_MAX (0xFFFF); set_bit() then deterministically indexes far past the 1024-bit prof->ptypes bitmap with no attacker-uncontrollable race or layout dependency.\nPR:L - Attack requires control of an assigned E810 VF, typically as a cloud tenant VM with netdev admin capability or a VFIO-delegated process; this is low privilege relative to the host (not init-namespace root), mirroring similar SR-IOV VF bugs.\nUI:N - The attacker sends their own VIRTCHNL configuration message (or loads a guest kernel module to do so); no separate victim-user interaction is required beyond routine VF assignment already present in SR-IOV deployments.\nS:C - In virtualized/cloud deployments (the primary E810 use case), a malicious guest VF corrupts host kernel stack memory in the PF driver, crossing the guest-to-host isolation boundary analogous to KVM/SR-IOV escape class bugs.\nC:H - The out-of-bounds set_bit() stack write corrupts kernel memory far beyond the 128-byte ptypes bitmap; such uncontrolled memory corruption is leverageable for kernel information disclosure in an exploit chain.\nI:H - set_bit(0xFFFF, prof->ptypes) performs an arbitrary out-of-bounds stack write (~8 KB past the bitmap on x86_64), providing memory corruption primitives potentially usable for host kernel code execution.\nA:H - The bug was reproduced causing a NULL-pointer kernel oops/page fault in ice_parser_profile_init(); reliable triggering from a malicious VF can panic or lock up the host PF kernel."}]}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/intel/ice/ice_parser.c"],"versions":[{"version":"e312b3a1e2092f612914dbc4fa5d96b4d8ff94ef","lessThan":"fe2f8d5a77adea38e889fe3d6cde1b76d4a635bf","status":"affected","versionType":"git"},{"version":"e312b3a1e2092f612914dbc4fa5d96b4d8ff94ef","lessThan":"5e496f2b615cec4b45537cfb5b54f36a51dc8753","status":"affected","versionType":"git"},{"version":"e312b3a1e2092f612914dbc4fa5d96b4d8ff94ef","lessThan":"33cc15aaf2491166dddc018b24b3b7db53ec01b2","status":"affected","versionType":"git"},{"version":"e312b3a1e2092f612914dbc4fa5d96b4d8ff94ef","lessThan":"59abb87159c53605c063f6e2ceb215b5eba43ee6","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/intel/ice/ice_parser.c"],"versions":[{"version":"6.12","status":"affected"},{"version":"0","lessThan":"6.12","status":"unaffected","versionType":"semver"},{"version":"6.12.101","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.42","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.1.6","lessThanOrEqual":"7.1.*","status":"unaffected","versionType":"semver"},{"version":"7.2","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":"6.12","versionEndExcluding":"6.12.101"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.12","versionEndExcluding":"6.18.42"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.12","versionEndExcluding":"7.1.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.12","versionEndExcluding":"7.2"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/fe2f8d5a77adea38e889fe3d6cde1b76d4a635bf"},{"url":"https://git.kernel.org/stable/c/5e496f2b615cec4b45537cfb5b54f36a51dc8753"},{"url":"https://git.kernel.org/stable/c/33cc15aaf2491166dddc018b24b3b7db53ec01b2"},{"url":"https://git.kernel.org/stable/c/59abb87159c53605c063f6e2ceb215b5eba43ee6"}],"title":"ice: reject out-of-range ptype in ice_parser_profile_init","x_generator":{"engine":"bippy-1.2.0"}}}}