In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Fix memory leak in dm_sw_fini()
After destroying dmub_srv, the memory associated with it is
not freed, causing a memory leak:
unreferenced object 0xffff896302b45800 (size 1024):
comm “(udev-worker)”, pid 222, jiffies 4294894636
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 …
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 …
backtrace (crc 6265fd77):
[<ffffffff993495ed>] kmalloc_trace+0x29d/0x340
[<ffffffffc0ea4a94>] dm_dmub_sw_init+0xb4/0x450 [amdgpu]
[<ffffffffc0ea4e55>] dm_sw_init+0x15/0x2b0 [amdgpu]
[<ffffffffc0ba8557>] amdgpu_device_init+0x1417/0x24e0 [amdgpu]
[<ffffffffc0bab285>] amdgpu_driver_load_kms+0x15/0x190 [amdgpu]
[<ffffffffc0ba09c7>] amdgpu_pci_probe+0x187/0x4e0 [amdgpu]
[<ffffffff9968fd1e>] local_pci_probe+0x3e/0x90
[<ffffffff996918a3>] pci_device_probe+0xc3/0x230
[<ffffffff99805872>] really_probe+0xe2/0x480
[<ffffffff99805c98>] __driver_probe_device+0x78/0x160
[<ffffffff99805daf>] driver_probe_device+0x1f/0x90
[<ffffffff9980601e>] __driver_attach+0xce/0x1c0
[<ffffffff99803170>] bus_for_each_dev+0x70/0xc0
[<ffffffff99804822>] bus_add_driver+0x112/0x210
[<ffffffff99807245>] driver_register+0x55/0x100
[<ffffffff990012d1>] do_one_initcall+0x41/0x300
Fix this by freeing dmub_srv after destroying it.
[
{
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"vendor": "Linux",
"product": "Linux",
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{
"status": "affected",
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"programFiles": [
"drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.6"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.6",
"versionType": "custom"
},
{
"status": "unaffected",
"version": "5.10.211",
"versionType": "custom",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.150",
"versionType": "custom",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.80",
"versionType": "custom",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.19",
"versionType": "custom",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.7.7",
"versionType": "custom",
"lessThanOrEqual": "6.7.*"
},
{
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"version": "6.8",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c"
],
"defaultStatus": "affected"
}
]
git.kernel.org/stable/c/10c6b90e975358c17856a578419dc449887899c2
git.kernel.org/stable/c/33f649f1b1cea39ed360e6c12bba4fac83118e6e
git.kernel.org/stable/c/541e79265ea7e339a7c4a462feafe9f8f996e04b
git.kernel.org/stable/c/58168005337eabef345a872be3f87d0215ff3b30
git.kernel.org/stable/c/b49b022f7dfce85eb77d0d987008fde5c01d7857
git.kernel.org/stable/c/bae67893578d608e35691dcdfa90c4957debf1d3
lists.debian.org/debian-lts-announce/2024/06/msg00017.html