In the Linux kernel, the following vulnerability has been resolved:
f2fs: let's avoid panic if extent_tree is not created
This patch avoids the below panic.
pc : __lookupextenttree+0xd8/0x760 lr : f2fsdowritedatapage+0x104/0x87c sp : ffffffc010cbb3c0 x29: ffffffc010cbb3e0 x28: 0000000000000000 x27: ffffff8803e7f020 x26: ffffff8803e7ed40 x25: ffffff8803e7f020 x24: ffffffc010cbb460 x23: ffffffc010cbb480 x22: 0000000000000000 x21: 0000000000000000 x20: ffffffff22e90900 x19: 0000000000000000 x18: ffffffc010c5d080 x17: 0000000000000000 x16: 0000000000000020 x15: ffffffdb1acdbb88 x14: ffffff888759e2b0 x13: 0000000000000000 x12: ffffff802da49000 x11: 000000000a001200 x10: ffffff8803e7ed40 x9 : ffffff8023195800 x8 : ffffff802da49078 x7 : 0000000000000001 x6 : 0000000000000000 x5 : 0000000000000006 x4 : ffffffc010cbba28 x3 : 0000000000000000 x2 : ffffffc010cbb480 x1 : 0000000000000000 x0 : ffffff8803e7ed40 Call trace: __lookupextenttree+0xd8/0x760 f2fsdowritedatapage+0x104/0x87c f2fswritesingledatapage+0x420/0xb60 f2fswritecache_pages+0x418/0xb1c __f2fswritedatapages+0x428/0x58c f2fswritedatapages+0x30/0x40 do_writepages+0x88/0x190 __writebacksingleinode+0x48/0x448 writebacksbinodes+0x468/0x9e8 _writebackinodeswb+0xb8/0x2a4 wbwriteback+0x33c/0x740 wbdowriteback+0x2b4/0x400 wbworkfn+0xe4/0x34c processonework+0x24c/0x5bc workerthread+0x3e8/0xa50 kthread+0x150/0x1b4
{
"cna_assigner": "Linux",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/48xxx/CVE-2022-48877.json"
}"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-48877.json"
[
{
"signature_version": "v1",
"target": {
"file": "fs/f2fs/extent_cache.c",
"function": "f2fs_lookup_extent_tree"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@1c38cdc747f00daf7394535eae5afc4c503c59bb",
"deprecated": false,
"digest": {
"function_hash": "230357456141744381938280907215864433145",
"length": 960.0
},
"id": "CVE-2022-48877-046c53bb",
"signature_type": "Function"
},
{
"signature_version": "v1",
"target": {
"file": "fs/f2fs/extent_cache.c",
"function": "f2fs_lookup_extent_tree"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@ff85a1dbd90d29f73033177ff8d8de4a27d9721c",
"deprecated": false,
"digest": {
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"length": 960.0
},
"id": "CVE-2022-48877-0e04dfff",
"signature_type": "Function"
},
{
"signature_version": "v1",
"target": {
"file": "fs/f2fs/extent_cache.c",
"function": "__lookup_extent_tree"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@df9d44b645b83fffccfb4e28c1f93376585fdec8",
"deprecated": false,
"digest": {
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"length": 1178.0
},
"id": "CVE-2022-48877-44eb0887",
"signature_type": "Function"
},
{
"signature_version": "v1",
"target": {
"file": "fs/f2fs/extent_cache.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@1c38cdc747f00daf7394535eae5afc4c503c59bb",
"deprecated": false,
"digest": {
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],
"threshold": 0.9
},
"id": "CVE-2022-48877-820e5145",
"signature_type": "Line"
},
{
"signature_version": "v1",
"target": {
"file": "fs/f2fs/extent_cache.c",
"function": "f2fs_lookup_extent_tree"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@dd83a9763e29ed7a21c8a43f7a62cd0a6bf74692",
"deprecated": false,
"digest": {
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"length": 960.0
},
"id": "CVE-2022-48877-95e89a0a",
"signature_type": "Function"
},
{
"signature_version": "v1",
"target": {
"file": "fs/f2fs/extent_cache.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@dd83a9763e29ed7a21c8a43f7a62cd0a6bf74692",
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"digest": {
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"id": "CVE-2022-48877-c9e6e6b6",
"signature_type": "Line"
},
{
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"target": {
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},
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"deprecated": false,
"digest": {
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{
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"target": {
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},
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"digest": {
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"id": "CVE-2022-48877-fa520610",
"signature_type": "Line"
}
]