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CVE-2024-50215— nvmet-auth: assign dh_key to NULL after kfree_sensitive

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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，该漏洞源于存在dh_key释放后未设为空的问题。

CVSS 8.1 · High EPSS 0.63% · P49

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux 7a277c37d3522e9b2777d762bbbcecafae2b1f8d< c94e965f766321641ec38e4eece9ce8884543244 affected
7a277c37d3522e9b2777d762bbbcecafae2b1f8d< c60af16e1d6cc2237d58336546d6adfc067b6b8f affected
7a277c37d3522e9b2777d762bbbcecafae2b1f8d< e61bd51e44409495d75847e9230736593e4c8710 affected
7a277c37d3522e9b2777d762bbbcecafae2b1f8d< d2f551b1f72b4c508ab9298419f6feadc3b5d791 affected
6.0 affected
< 6.0 unaffected
6.1.116≤ 6.1.* unaffected
6.6.60≤ 6.6.* unaffected
… +2 more rows
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I. Basic Information for CVE-2024-50215

Vulnerability Information
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Vulnerability Title
nvmet-auth: assign dh_key to NULL after kfree_sensitive
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: nvmet-auth: assign dh_key to NULL after kfree_sensitive ctrl->dh_key might be used across multiple calls to nvmet_setup_dhgroup() for the same controller. So it's better to nullify it after release on error path in order to avoid double free later in nvmet_destroy_auth(). Found by Linux Verification Center (linuxtesting.org) with Svace.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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，该漏洞源于存在dh_key释放后未设为空的问题。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux 7a277c37d3522e9b2777d762bbbcecafae2b1f8d ~ c94e965f766321641ec38e4eece9ce8884543244 -
Linux Linux 6.0 -

II. Public POCs for CVE-2024-50215

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III. Intelligence Information for CVE-2024-50215

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Patches & Fixes for CVE-2024-50215 (4)

Same Patch Batch · Linux · 2024-11-09 · 49 CVEs total

CVE-2024-50246 7.8 HIGH fs/ntfs3: Add rough attr alloc_size check
CVE-2024-50237 7.8 HIGH wifi: mac80211: do not pass a stopped vif to the driver in .get_txpower
CVE-2024-50235 7.8 HIGH wifi: cfg80211: clear wdev->cqm_config pointer on free
CVE-2024-50250 7.8 HIGH fsdax: dax_unshare_iter needs to copy entire blocks
CVE-2024-50230 7.8 HIGH nilfs2: fix kernel bug due to missing clearing of checked flag
CVE-2024-50253 7.8 HIGH bpf: Check the validity of nr_words in bpf_iter_bits_new()
CVE-2024-50225 7.8 HIGH btrfs: fix error propagation of split bios
CVE-2024-50217 7.8 HIGH btrfs: fix use-after-free of block device file in __btrfs_free_extra_devids()
CVE-2024-50261 7.8 HIGH macsec: Fix use-after-free while sending the offloading packet
CVE-2024-50262 7.8 HIGH bpf: Fix out-of-bounds write in trie_get_next_key()
CVE-2024-50221 7.8 HIGH drm/amd/pm: Vangogh: Fix kernel memory out of bounds write
CVE-2024-50256 7.5 HIGH netfilter: nf_reject_ipv6: fix potential crash in nf_send_reset6()
CVE-2024-50241 7.5 HIGH NFSD: Initialize struct nfsd4_copy earlier
CVE-2024-50247 7.3 HIGH fs/ntfs3: Check if more than chunk-size bytes are written
CVE-2024-50248 7.1 HIGH ntfs3: Add bounds checking to mi_enum_attr()
CVE-2024-50257 7.0 HIGH netfilter: Fix use-after-free in get_info()
CVE-2024-50222 7.0 HIGH iov_iter: fix copy_page_from_iter_atomic() if KMAP_LOCAL_FORCE_MAP
CVE-2024-50239 phy: qcom: qmp-usb-legacy: fix NULL-deref on runtime suspend
CVE-2024-50244 fs/ntfs3: Additional check in ni_clear()
CVE-2024-50255 Bluetooth: hci: fix null-ptr-deref in hci_read_supported_codecs

Showing top 20 of 49 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-50215

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