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CVE-2022-49707— Linux kernel 安全漏洞

AI Predicted 7.8 Difficulty: Moderate EPSS 0.01% · P1

Affected Version Matrix 18

ベンダープロダクトVersion Rangeステータス
LinuxLinux1c6bd7173d66b3dfdefcedb38cabc1fb03997509< 0dc2fca8e4f9ac4a40e8424a10163369cca0cc06affected
1c6bd7173d66b3dfdefcedb38cabc1fb03997509< 7c921328ac760bba780bdace41f4cd045f7f1405affected
1c6bd7173d66b3dfdefcedb38cabc1fb03997509< b9747263b13e5290ac4d63bec47e38f701303cadaffected
1c6bd7173d66b3dfdefcedb38cabc1fb03997509< fba54289176702a7caac0b64738406775817f451affected
1c6bd7173d66b3dfdefcedb38cabc1fb03997509< bfd004a1d3a062aac300523d406ac1f3e5f1a82caffected
1c6bd7173d66b3dfdefcedb38cabc1fb03997509< 33b1bba31f4c784d33d2c2517964bdccdc9204cdaffected
1c6bd7173d66b3dfdefcedb38cabc1fb03997509< af75c481a2e45e70f62f5942c93695e95bf7bd21affected
1c6bd7173d66b3dfdefcedb38cabc1fb03997509< b55c3cd102a6f48b90e61c44f7f3dda8c290c694affected
… +10 more rows
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I. CVE-2022-49707の基本情報

脆弱性情報
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脆弱性タイトル
ext4: add reserved GDT blocks check
ソース: NVD (National Vulnerability Database)
脆弱性説明
In the Linux kernel, the following vulnerability has been resolved: ext4: add reserved GDT blocks check We capture a NULL pointer issue when resizing a corrupt ext4 image which is freshly clear resize_inode feature (not run e2fsck). It could be simply reproduced by following steps. The problem is because of the resize_inode feature was cleared, and it will convert the filesystem to meta_bg mode in ext4_resize_fs(), but the es->s_reserved_gdt_blocks was not reduced to zero, so could we mistakenly call reserve_backup_gdb() and passing an uninitialized resize_inode to it when adding new group descriptors. mkfs.ext4 /dev/sda 3G tune2fs -O ^resize_inode /dev/sda #forget to run requested e2fsck mount /dev/sda /mnt resize2fs /dev/sda 8G ======== BUG: kernel NULL pointer dereference, address: 0000000000000028 CPU: 19 PID: 3243 Comm: resize2fs Not tainted 5.18.0-rc7-00001-gfde086c5ebfd #748 ... RIP: 0010:ext4_flex_group_add+0xe08/0x2570 ... Call Trace: <TASK> ext4_resize_fs+0xbec/0x1660 __ext4_ioctl+0x1749/0x24e0 ext4_ioctl+0x12/0x20 __x64_sys_ioctl+0xa6/0x110 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f2dd739617b ======== The fix is simple, add a check in ext4_resize_begin() to make sure that the es->s_reserved_gdt_blocks is zero when the resize_inode feature is disabled.
ソース: NVD (National Vulnerability Database)
CVSS情報
N/A
ソース: NVD (National Vulnerability Database)
脆弱性タイプ
N/A
ソース: NVD (National Vulnerability Database)
脆弱性タイトル
Linux kernel 安全漏洞
ソース: CNNVD (China National Vulnerability Database)
脆弱性説明
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于ext4在调整文件系统大小时未正确处理保留的GDT块，可能导致空指针取消引用。
ソース: CNNVD (China National Vulnerability Database)
CVSS情報
N/A
ソース: CNNVD (China National Vulnerability Database)
脆弱性タイプ
N/A
ソース: CNNVD (China National Vulnerability Database)

影響を受ける製品

ベンダープロダクト影響を受けるバージョンCPE購読
LinuxLinux 1c6bd7173d66b3dfdefcedb38cabc1fb03997509 ~ 0dc2fca8e4f9ac4a40e8424a10163369cca0cc06 -
LinuxLinux 3.7 -

II. CVE-2022-49707の公開POC

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III. CVE-2022-49707のインテリジェンス情報

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CVE-2022-49707 补丁与修复 (8)

Same Patch Batch · Linux · 2025-02-26 · 706 CVEs total

CVE-2022-49496media: mediatek: vcodec: prevent kernel crash when rmmod mtk-vcodec-dec.ko
CVE-2022-49487mtd: rawnand: intel: fix possible null-ptr-deref in ebu_nand_probe()
CVE-2022-49486ASoC: fsl: Fix refcount leak in imx_sgtl5000_probe
CVE-2022-49488drm/msm/mdp5: Return error code in mdp5_mixer_release when deadlock is detected
CVE-2022-49489drm/msm/disp/dpu1: set vbif hw config to NULL to avoid use after memory free during pm run
CVE-2022-49490drm/msm/mdp5: Return error code in mdp5_pipe_release when deadlock is detected
CVE-2022-49491drm/rockchip: vop: fix possible null-ptr-deref in vop_bind()
CVE-2022-49492nvme-pci: fix a NULL pointer dereference in nvme_alloc_admin_tags
CVE-2022-49493ASoC: rt5645: Fix errorenous cleanup order
CVE-2022-49494mtd: rawnand: cadence: fix possible null-ptr-deref in cadence_nand_dt_probe()
CVE-2022-49495drm/msm/hdmi: check return value after calling platform_get_resource_byname()
CVE-2022-49497net: remove two BUG() from skb_checksum_help()
CVE-2022-49503ath9k_htc: fix potential out of bounds access with invalid rxstatus->rs_keyix
CVE-2022-49508HID: elan: Fix potential double free in elan_input_configured
CVE-2022-49506drm/mediatek: Add vblank register/unregister callback functions
CVE-2022-49504scsi: lpfc: Inhibit aborts if external loopback plug is inserted
CVE-2022-49505NFC: NULL out the dev->rfkill to prevent UAF
CVE-2022-49502media: rga: fix possible memory leak in rga_probe
CVE-2022-49499drm/msm: Fix null pointer dereferences without iommu
CVE-2022-49498ALSA: pcm: Check for null pointer of pointer substream before dereferencing it

Showing 20 of 706 CVEs. View all on vendor page →

IV. 関連脆弱性

同じ製品: Linux
同じベンダー: Linux

V. CVE-2022-49707へのコメント

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