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CVE-2022-49674— dm raid: fix accesses beyond end of raid member array

EPSS 0.03% · P9

Affected Version Matrix 16

VendorProductVersion RangeStatus
LinuxLinux33e53f06850f44ec9722e08a993ecf8816e447a5< 5e161a8826b63c0b8b43e4a7fad1f956780f42abaffected
33e53f06850f44ec9722e08a993ecf8816e447a5< df1a5ab0dd0775f2ea101c71f2addbc4c0ea0f85affected
33e53f06850f44ec9722e08a993ecf8816e447a5< 90de15357504c8097ab29769dc6852e16281e9e8affected
33e53f06850f44ec9722e08a993ecf8816e447a5< 9bf2b0757b04c78dc5d6e3a198acca98457b32a1affected
33e53f06850f44ec9722e08a993ecf8816e447a5< 6352b2f4d8e95ec0ae576d7705435d64cfa29503affected
33e53f06850f44ec9722e08a993ecf8816e447a5< bcff98500ea3b4e7615ec31d2bdd326bc1ef5134affected
33e53f06850f44ec9722e08a993ecf8816e447a5< 332bd0778775d0cf105c4b9e03e460b590749916affected
4.8affected
… +8 more rows
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I. Basic Information for CVE-2022-49674

Vulnerability Information
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Vulnerability Title
dm raid: fix accesses beyond end of raid member array
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: dm raid: fix accesses beyond end of raid member array On dm-raid table load (using raid_ctr), dm-raid allocates an array rs->devs[rs->raid_disks] for the raid device members. rs->raid_disks is defined by the number of raid metadata and image tupples passed into the target's constructor. In the case of RAID layout changes being requested, that number can be different from the current number of members for existing raid sets as defined in their superblocks. Example RAID layout changes include: - raid1 legs being added/removed - raid4/5/6/10 number of stripes changed (stripe reshaping) - takeover to higher raid level (e.g. raid5 -> raid6) When accessing array members, rs->raid_disks must be used in control loops instead of the potentially larger value in rs->md.raid_disks. Otherwise it will cause memory access beyond the end of the rs->devs array. Fix this by changing code that is prone to out-of-bounds access. Also fix validate_raid_redundancy() to validate all devices that are added. Also, use braces to help clean up raid_iterate_devices(). The out-of-bounds memory accesses was discovered using KASAN. This commit was verified to pass all LVM2 RAID tests (with KASAN enabled).
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
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dm raid中访问超出raid成员数组边界。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux 33e53f06850f44ec9722e08a993ecf8816e447a5 ~ 5e161a8826b63c0b8b43e4a7fad1f956780f42ab -
LinuxLinux 4.8 -

II. Public POCs for CVE-2022-49674

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III. Intelligence Information for CVE-2022-49674

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

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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 top 20 of 706 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-49674

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