In the Linux kernel, the following vulnerability has been resolved:
IB/hfi1: Fix AIP early init panic
An early failure in hfi1ipoibsetup_rn() can lead to the following panic:
BUG: unable to handle kernel NULL pointer dereference at 00000000000001b0 PGD 0 P4D 0 Oops: 0002 [#1] SMP NOPTI Workqueue: events workforcpufn RIP: 0010:trytograbpending+0x2b/0x140 Code: 1f 44 00 00 41 55 41 54 55 48 89 d5 53 48 89 fb 9c 58 0f 1f 44 00 00 48 89 c2 fa 66 0f 1f 44 00 00 48 89 55 00 40 84 f6 75 77 <f0> 48 0f ba 2b 00 72 09 31 c0 5b 5d 41 5c 41 5d c3 48 89 df e8 6c RSP: 0018:ffffb6b3cf7cfa48 EFLAGS: 00010046 RAX: 0000000000000246 RBX: 00000000000001b0 RCX: 0000000000000000 RDX: 0000000000000246 RSI: 0000000000000000 RDI: 00000000000001b0 RBP: ffffb6b3cf7cfa70 R08: 0000000000000f09 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffffb6b3cf7cfa90 R14: ffffffff9b2fbfc0 R15: ffff8a4fdf244690 FS: 0000000000000000(0000) GS:ffff8a527f400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000000001b0 CR3: 00000017e2410003 CR4: 00000000007706f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 PKRU: 55555554 Call Trace: _cancelworktimer+0x42/0x190 ? devprintkemit+0x4e/0x70 iowaitcancelwork+0x15/0x30 [hfi1] hfi1ipoibtxreqdeinit+0x5a/0x220 [hfi1] ? deverr+0x6c/0x90 hfi1ipoibnetdevdtor+0x15/0x30 [hfi1] hfi1ipoibsetuprn+0x10e/0x150 [hfi1] rdmainitnetdev+0x5a/0x80 [ibcore] ? hfi1ipoibfreerdmanetdev+0x20/0x20 [hfi1] ipoibintfinit+0x6c/0x350 [ibipoib] ipoibintfalloc+0x5c/0xc0 [ibipoib] ipoibaddone+0xbe/0x300 [ibipoib] addclientcontext+0x12c/0x1a0 [ibcore] enabledeviceandget+0xdc/0x1d0 [ibcore] ibregisterdevice+0x572/0x6b0 [ibcore] rvtregisterdevice+0x11b/0x220 [rdmavt] hfi1registeribdevice+0x6b4/0x770 [hfi1] doinitone.isra.20+0x3e3/0x680 [hfi1] localpciprobe+0x41/0x90 workforcpufn+0x16/0x20 processonework+0x1a7/0x360 ? createworker+0x1a0/0x1a0 workerthread+0x1cf/0x390 ? createworker+0x1a0/0x1a0 kthread+0x116/0x130 ? kthreadflushworkfn+0x10/0x10 retfrom_fork+0x1f/0x40
The panic happens in hfi1ipoibtxreqdeinit() because there is a NULL deref when hfi1ipoibnetdevdtor() is called in this error case.
hfi1ipoibtxreqinit() and hfi1ipoibrxqinit() are self unwinding so fix by adjusting the error paths accordingly.
Other changes: - hfi1ipoibfreerdmanetdev() is deleted including the freenetdev() since the netdev core code deletes calls freenetdev() - The switch to the accelerated entrances is moved to the success path.
[
    {
        "id": "CVE-2022-48728-024532d0",
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
            "function_hash": "266522972568117283453307769295428542856",
            "length": 1070.0
        },
        "target": {
            "file": "drivers/infiniband/hw/hfi1/ipoib_main.c",
            "function": "hfi1_ipoib_setup_rn"
        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4a9bd1e6780fc59f81466ec3489d5ad535a37190"
    },
    {
        "id": "CVE-2022-48728-20f5493a",
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Line",
        "digest": {
            "line_hashes": [
                "73486512125740363575142000222208339405",
                "303756635059008556472373682453041722187",
                "297378894733851590518544831106403921613",
                "11841102003801101726729024559303483145",
                "332498089753238599614040866166982881986",
                "8573033363363991417677570048922789815",
                "214973427734504575477399018482227822737",
                "55795854909431414019838485346915293376",
                "130869657938083526559964442606520092418",
                "205214953732722132806397917833701072448",
                "295844482843892377903184372977643185420",
                "220536664802959465877049449360159482842",
                "73099564356571421976332327052429016240",
                "86985721094753118515698970725501109386",
                "66147632570679831305609096188110960526",
                "237074240636874636680031879920495464764",
                "28451459119698457200317003744989048122",
                "269120757955929073331280389709109261933",
                "203245714865969760125340750198331045201",
                "69111544407246775822075464572946068494",
                "149367584246250211891008414971264376520",
                "133592269407676558961816939074962609567",
                "23157426110058310713063023283393999737",
                "84903473063537889890384935239174386659",
                "128219272329025836070011879769976295237"
            ],
            "threshold": 0.9
        },
        "target": {
            "file": "drivers/infiniband/hw/hfi1/ipoib_main.c"
        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@1899c3cad265c4583658aed5293d02e8af84276b"
    },
    {
        "id": "CVE-2022-48728-2dadf800",
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
            "function_hash": "22966104932178912732848047532441781462",
            "length": 85.0
        },
        "target": {
            "file": "drivers/infiniband/hw/hfi1/ipoib_main.c",
            "function": "hfi1_ipoib_free_rdma_netdev"
        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@1899c3cad265c4583658aed5293d02e8af84276b"
    },
    {
        "id": "CVE-2022-48728-5078635a",
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Line",
        "digest": {
            "line_hashes": [
                "73486512125740363575142000222208339405",
                "303756635059008556472373682453041722187",
                "297378894733851590518544831106403921613",
                "11841102003801101726729024559303483145",
                "332498089753238599614040866166982881986",
                "8573033363363991417677570048922789815",
                "214973427734504575477399018482227822737",
                "55795854909431414019838485346915293376",
                "130869657938083526559964442606520092418",
                "205214953732722132806397917833701072448",
                "295844482843892377903184372977643185420",
                "220536664802959465877049449360159482842",
                "73099564356571421976332327052429016240",
                "86985721094753118515698970725501109386",
                "66147632570679831305609096188110960526",
                "237074240636874636680031879920495464764",
                "28451459119698457200317003744989048122",
                "269120757955929073331280389709109261933",
                "203245714865969760125340750198331045201",
                "69111544407246775822075464572946068494",
                "149367584246250211891008414971264376520",
                "133592269407676558961816939074962609567",
                "23157426110058310713063023283393999737",
                "84903473063537889890384935239174386659",
                "128219272329025836070011879769976295237"
            ],
            "threshold": 0.9
        },
        "target": {
            "file": "drivers/infiniband/hw/hfi1/ipoib_main.c"
        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@5f8f55b92edd621f056bdf09e572092849fabd83"
    },
    {
        "id": "CVE-2022-48728-5f70b3d3",
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
            "function_hash": "22966104932178912732848047532441781462",
            "length": 85.0
        },
        "target": {
            "file": "drivers/infiniband/hw/hfi1/ipoib_main.c",
            "function": "hfi1_ipoib_free_rdma_netdev"
        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4a9bd1e6780fc59f81466ec3489d5ad535a37190"
    },
    {
        "id": "CVE-2022-48728-870d241e",
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
            "function_hash": "253243245172635566525277703382383442575",
            "length": 1114.0
        },
        "target": {
            "file": "drivers/infiniband/hw/hfi1/ipoib_main.c",
            "function": "hfi1_ipoib_setup_rn"
        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@1899c3cad265c4583658aed5293d02e8af84276b"
    },
    {
        "id": "CVE-2022-48728-c0521efa",
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
            "function_hash": "22966104932178912732848047532441781462",
            "length": 85.0
        },
        "target": {
            "file": "drivers/infiniband/hw/hfi1/ipoib_main.c",
            "function": "hfi1_ipoib_free_rdma_netdev"
        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@5f8f55b92edd621f056bdf09e572092849fabd83"
    },
    {
        "id": "CVE-2022-48728-cdaea679",
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
            "function_hash": "253243245172635566525277703382383442575",
            "length": 1114.0
        },
        "target": {
            "file": "drivers/infiniband/hw/hfi1/ipoib_main.c",
            "function": "hfi1_ipoib_setup_rn"
        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@5f8f55b92edd621f056bdf09e572092849fabd83"
    },
    {
        "id": "CVE-2022-48728-e12ce94a",
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Line",
        "digest": {
            "line_hashes": [
                "210996282885884573689135299930380624214",
                "137337676099309688355603830552578139810",
                "297378894733851590518544831106403921613",
                "11841102003801101726729024559303483145",
                "332498089753238599614040866166982881986",
                "8573033363363991417677570048922789815",
                "214973427734504575477399018482227822737",
                "55795854909431414019838485346915293376",
                "130869657938083526559964442606520092418",
                "205214953732722132806397917833701072448",
                "295844482843892377903184372977643185420",
                "220536664802959465877049449360159482842",
                "73099564356571421976332327052429016240",
                "86985721094753118515698970725501109386",
                "66147632570679831305609096188110960526",
                "237074240636874636680031879920495464764",
                "28451459119698457200317003744989048122",
                "269120757955929073331280389709109261933",
                "203245714865969760125340750198331045201",
                "69111544407246775822075464572946068494",
                "149367584246250211891008414971264376520",
                "133592269407676558961816939074962609567",
                "23157426110058310713063023283393999737",
                "84903473063537889890384935239174386659",
                "128219272329025836070011879769976295237"
            ],
            "threshold": 0.9
        },
        "target": {
            "file": "drivers/infiniband/hw/hfi1/ipoib_main.c"
        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4a9bd1e6780fc59f81466ec3489d5ad535a37190"
    },
    {
        "id": "CVE-2022-48728-f6c5b487",
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
            "function_hash": "22966104932178912732848047532441781462",
            "length": 85.0
        },
        "target": {
            "file": "drivers/infiniband/hw/hfi1/ipoib_main.c",
            "function": "hfi1_ipoib_free_rdma_netdev"
        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@a3dd4d2682f2a796121609e5f3bbeb1243198c53"
    },
    {
        "id": "CVE-2022-48728-f7a7b54d",
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
            "function_hash": "253243245172635566525277703382383442575",
            "length": 1114.0
        },
        "target": {
            "file": "drivers/infiniband/hw/hfi1/ipoib_main.c",
            "function": "hfi1_ipoib_setup_rn"
        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@a3dd4d2682f2a796121609e5f3bbeb1243198c53"
    },
    {
        "id": "CVE-2022-48728-fdd8e960",
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Line",
        "digest": {
            "line_hashes": [
                "73486512125740363575142000222208339405",
                "303756635059008556472373682453041722187",
                "297378894733851590518544831106403921613",
                "11841102003801101726729024559303483145",
                "332498089753238599614040866166982881986",
                "8573033363363991417677570048922789815",
                "214973427734504575477399018482227822737",
                "55795854909431414019838485346915293376",
                "130869657938083526559964442606520092418",
                "205214953732722132806397917833701072448",
                "295844482843892377903184372977643185420",
                "220536664802959465877049449360159482842",
                "73099564356571421976332327052429016240",
                "86985721094753118515698970725501109386",
                "66147632570679831305609096188110960526",
                "237074240636874636680031879920495464764",
                "28451459119698457200317003744989048122",
                "269120757955929073331280389709109261933",
                "203245714865969760125340750198331045201",
                "69111544407246775822075464572946068494",
                "149367584246250211891008414971264376520",
                "133592269407676558961816939074962609567",
                "23157426110058310713063023283393999737",
                "84903473063537889890384935239174386659",
                "128219272329025836070011879769976295237"
            ],
            "threshold": 0.9
        },
        "target": {
            "file": "drivers/infiniband/hw/hfi1/ipoib_main.c"
        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@a3dd4d2682f2a796121609e5f3bbeb1243198c53"
    }
]