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CVE-2024-50262— bpf: Fix out-of-bounds write in trie_get_next_key()

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trie_get_next_key函数中存在越界写入问题。

CVSS 7.8 · High EPSS 0.27% · P18

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux b471f2f1de8b816f1e799b80aa92588f3566e4bd< e8494ac079814a53fbc2258d2743e720907488ed affected
b471f2f1de8b816f1e799b80aa92588f3566e4bd< 91afbc0eb3c90258ae378ae3c6ead3d2371e926d affected
b471f2f1de8b816f1e799b80aa92588f3566e4bd< 590976f921723d53ac199c01d5b7b73a94875e68 affected
b471f2f1de8b816f1e799b80aa92588f3566e4bd< 86c8ebe02d8806dd8878d0063e8e185622ab6ea6 affected
b471f2f1de8b816f1e799b80aa92588f3566e4bd< a035df0b98df424559fd383e8e1a268f422ea2ba affected
b471f2f1de8b816f1e799b80aa92588f3566e4bd< 90a6e0e1e151ef7a9282e78f54c3091de2dcc99c affected
b471f2f1de8b816f1e799b80aa92588f3566e4bd< c4b4f9a9ab82238cb158fa4fe61a8c0ae21a4980 affected
b471f2f1de8b816f1e799b80aa92588f3566e4bd< 13400ac8fb80c57c2bfb12ebd35ee121ce9b4d21 affected
… +10 more rows
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I. Basic Information for CVE-2024-50262

Vulnerability Information
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Vulnerability Title
bpf: Fix out-of-bounds write in trie_get_next_key()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix out-of-bounds write in trie_get_next_key() trie_get_next_key() allocates a node stack with size trie->max_prefixlen, while it writes (trie->max_prefixlen + 1) nodes to the stack when it has full paths from the root to leaves. For example, consider a trie with max_prefixlen is 8, and the nodes with key 0x00/0, 0x00/1, 0x00/2, ... 0x00/8 inserted. Subsequent calls to trie_get_next_key with _key with .prefixlen = 8 make 9 nodes be written on the node stack with size 8.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/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trie_get_next_key函数中存在越界写入问题。
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 b471f2f1de8b816f1e799b80aa92588f3566e4bd ~ e8494ac079814a53fbc2258d2743e720907488ed -
Linux Linux 4.16 -

II. Public POCs for CVE-2024-50262

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III. Intelligence Information for CVE-2024-50262

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Patches & Fixes for CVE-2024-50262 (8)

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

CVE-2024-50215 8.1 HIGH nvmet-auth: assign dh_key to NULL after kfree_sensitive
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-2024-50261 7.8 HIGH macsec: Fix use-after-free while sending the offloading packet
CVE-2024-50217 7.8 HIGH btrfs: fix use-after-free of block device file in __btrfs_free_extra_devids()
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-2024-50243 fs/ntfs3: Fix general protection fault in run_is_mapped_full
CVE-2024-50260 sock_map: fix a NULL pointer dereference in sock_map_link_update_prog()
CVE-2024-50238 phy: qcom: qmp-usbc: fix NULL-deref on runtime suspend

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-2024-50262

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