In the Linux kernel, the following vulnerability has been resolved:
bonding: change ipsec_lock from spin lock to mutex
In the cited commit, bond->ipseclock is added to protect ipseclist, hence xdodevstateadd and xdodevstatedelete are called inside this lock. As ipsec_lock is a spin lock and such xfrmdev ops may sleep, "scheduling while atomic" will be triggered when changing bond's active slave.
[ 101.055189] BUG: scheduling while atomic: bash/902/0x00000200 [ 101.055726] Modules linked in: [ 101.058211] CPU: 3 PID: 902 Comm: bash Not tainted 6.9.0-rc4+ #1 [ 101.058760] Hardware name: [ 101.059434] Call Trace: [ 101.059436] <TASK> [ 101.060873] dumpstacklvl+0x51/0x60 [ 101.061275] _schedulebug+0x4e/0x60 [ 101.061682] _schedule+0x612/0x7c0 [ 101.062078] ? _modtimer+0x25c/0x370 [ 101.062486] schedule+0x25/0xd0 [ 101.062845] scheduletimeout+0x77/0xf0 [ 101.063265] ? asmcommoninterrupt+0x22/0x40 [ 101.063724] ? _bpftraceitimerstate+0x10/0x10 [ 101.064215] _waitforcommon+0x87/0x190 [ 101.064648] ? usleeprangestate+0x90/0x90 [ 101.065091] cmdexec+0x437/0xb20 [mlx5core] [ 101.065569] mlx5cmddo+0x1e/0x40 [mlx5core] [ 101.066051] mlx5cmdexec+0x18/0x30 [mlx5core] [ 101.066552] mlx5cryptocreatedekkey+0xea/0x120 [mlx5core] [ 101.067163] ? bondingsysfsstoreoption+0x4d/0x80 [bonding] [ 101.067738] ? kmalloctrace+0x4d/0x350 [ 101.068156] mlx5ipseccreatesactx+0x33/0x100 [mlx5core] [ 101.068747] mlx5exfrmaddstate+0x47b/0xaa0 [mlx5core] [ 101.069312] bondchangeactiveslave+0x392/0x900 [bonding] [ 101.069868] bondoptionactiveslaveset+0x1c2/0x240 [bonding] [ 101.070454] _bondoptset+0xa6/0x430 [bonding] [ 101.070935] _bondoptsetnotify+0x2f/0x90 [bonding] [ 101.071453] bondopttrysetrtnl+0x72/0xb0 [bonding] [ 101.071965] bondingsysfsstoreoption+0x4d/0x80 [bonding] [ 101.072567] kernfsfopwriteiter+0x10c/0x1a0 [ 101.073033] vfswrite+0x2d8/0x400 [ 101.073416] ? allocfd+0x48/0x180 [ 101.073798] ksyswrite+0x5f/0xe0 [ 101.074175] dosyscall64+0x52/0x110 [ 101.074576] entrySYSCALL64after_hwframe+0x4b/0x53
As bondipsecaddsaall and bondipsecdelsaall are only called from bondchangeactiveslave, which requires holding the RTNL lock. And bondipsecaddsa and bondipsecdelsa are xfrm state xdodevstateadd and xdodevstatedelete APIs, which are in user context. So ipseclock doesn't have to be spin lock, change it to mutex, and thus the above issue can be resolved.
{ "vanir_signatures": [ { "signature_version": "v1", "signature_type": "Function", "target": { "file": "drivers/net/bonding/bond_main.c", "function": "bond_ipsec_add_sa" }, "deprecated": false, "digest": { "length": 980.0, "function_hash": "244129659844457000418818814899668287957" }, "id": "CVE-2024-46678-14f988d1", "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@2aeeef906d5a526dc60cf4af92eda69836c39b1f" }, { "signature_version": "v1", "signature_type": "Function", "target": { "file": "drivers/net/bonding/bond_main.c", "function": "bond_uninit" }, "deprecated": false, "digest": { "length": 348.0, "function_hash": "310530838423907955112552068703712480994" }, "id": "CVE-2024-46678-162015e8", "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@2aeeef906d5a526dc60cf4af92eda69836c39b1f" }, { "signature_version": "v1", "signature_type": "Line", "target": { "file": "include/net/bonding.h" }, "deprecated": false, "digest": { "line_hashes": [ "131389781964170256706173779730043613076", "213333545424447916799971098941091915988", "182320529700887938257568641086176031109", "69539523535792426342557044197721991372" ], "threshold": 0.9 }, "id": "CVE-2024-46678-22aeee93", "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@6b598069164ac1bb60996d6ff94e7f9169dbd2d3" }, { "signature_version": "v1", "signature_type": "Function", "target": { "file": "drivers/net/bonding/bond_main.c", "function": "bond_ipsec_add_sa_all" }, "deprecated": false, "digest": { "length": 875.0, "function_hash": "72220186914272486990825094666672817021" }, "id": "CVE-2024-46678-4ac9135c", "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@56354b0a2c24a7828eeed7de4b4dc9652d9affa3" }, { "signature_version": "v1", "signature_type": "Function", "target": { "file": "drivers/net/bonding/bond_main.c", "function": "bond_uninit" }, "deprecated": false, "digest": { "length": 348.0, "function_hash": "310530838423907955112552068703712480994" }, "id": "CVE-2024-46678-4d922389", "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@6b598069164ac1bb60996d6ff94e7f9169dbd2d3" }, { "signature_version": "v1", "signature_type": "Function", "target": { "file": "drivers/net/bonding/bond_main.c", "function": "bond_ipsec_del_sa_all" }, "deprecated": false, "digest": { "length": 781.0, "function_hash": "164942018493480490900114123545510316632" }, "id": "CVE-2024-46678-51a6b914", "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@56354b0a2c24a7828eeed7de4b4dc9652d9affa3" }, { "signature_version": "v1", "signature_type": "Function", "target": { "file": "drivers/net/bonding/bond_main.c", "function": "bond_ipsec_del_sa" }, "deprecated": false, "digest": { "length": 848.0, "function_hash": "194868208867400252058758636142016395694" }, "id": "CVE-2024-46678-58cd67c6", "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@56354b0a2c24a7828eeed7de4b4dc9652d9affa3" }, { "signature_version": "v1", "signature_type": "Function", "target": { "file": "drivers/net/bonding/bond_main.c", "function": "bond_ipsec_add_sa" }, "deprecated": false, "digest": { "length": 980.0, "function_hash": "244129659844457000418818814899668287957" }, "id": "CVE-2024-46678-5c6d8bb0", "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@6b598069164ac1bb60996d6ff94e7f9169dbd2d3" }, { "signature_version": "v1", "signature_type": "Function", "target": { "file": "drivers/net/bonding/bond_main.c", "function": "bond_ipsec_del_sa" }, "deprecated": false, "digest": { "length": 848.0, "function_hash": "194868208867400252058758636142016395694" }, "id": "CVE-2024-46678-62a5e2ec", "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@2aeeef906d5a526dc60cf4af92eda69836c39b1f" }, { "signature_version": "v1", "signature_type": "Function", "target": { "file": "drivers/net/bonding/bond_main.c", "function": "bond_ipsec_del_sa_all" }, "deprecated": false, "digest": { "length": 781.0, "function_hash": "164942018493480490900114123545510316632" }, "id": "CVE-2024-46678-6ad4e1ea", "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@2aeeef906d5a526dc60cf4af92eda69836c39b1f" }, { "signature_version": "v1", "signature_type": "Function", "target": { "file": "drivers/net/bonding/bond_main.c", "function": "bond_ipsec_add_sa_all" }, "deprecated": false, "digest": { "length": 875.0, "function_hash": "72220186914272486990825094666672817021" }, "id": "CVE-2024-46678-6d5de6db", "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@2aeeef906d5a526dc60cf4af92eda69836c39b1f" }, { "signature_version": "v1", "signature_type": "Function", "target": { "file": "drivers/net/bonding/bond_main.c", "function": "bond_ipsec_add_sa_all" }, "deprecated": false, "digest": { "length": 875.0, "function_hash": "72220186914272486990825094666672817021" }, "id": "CVE-2024-46678-86c0229b", "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@6b598069164ac1bb60996d6ff94e7f9169dbd2d3" }, { "signature_version": "v1", "signature_type": "Function", "target": { "file": "drivers/net/bonding/bond_main.c", "function": "bond_ipsec_del_sa_all" }, "deprecated": false, "digest": { "length": 781.0, "function_hash": "164942018493480490900114123545510316632" }, "id": "CVE-2024-46678-9b625a00", "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@6b598069164ac1bb60996d6ff94e7f9169dbd2d3" }, { "signature_version": "v1", "signature_type": "Line", "target": { "file": "drivers/net/bonding/bond_main.c" }, "deprecated": false, "digest": { "line_hashes": [ "163482465936904467107332995042450514571", "64414500015769110128611119820598330475", "253209949963840565951879162898043901594", "166744726542585077385029133871422777798", "316714577740949349101662776366387662188", 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"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@56354b0a2c24a7828eeed7de4b4dc9652d9affa3" } ] }