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CVE-2024-44986— ipv6: fix possible UAF in ip6_finish_output2()

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ipv6组件存在释放后重用漏洞。

CVSS 8.1 · High EPSS 0.72% · P53

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 20

VendorProduct Version RangeStatus
Linux Linux ded37d03440d0ab346a8287cc2ba88b8dc90ceb0< ae8512e93f4ce47614ca89defaec1b93e00697b8 affected
2323690eb05865a657709f4d28eb9538ea97bfc2< 1504108cb6020df7b1a31c9bb80fd587470aa448 affected
5796015fa968a3349027a27dcd04c71d95c53ba5< e891b36de161fcd96f12ff83667473e5067b9037 affected
5796015fa968a3349027a27dcd04c71d95c53ba5< 3574d28caf9a09756ae87ad1ea096c6f47b6101e affected
5796015fa968a3349027a27dcd04c71d95c53ba5< 6ab6bf731354a6fdbaa617d1ec194960db61cf3b affected
5796015fa968a3349027a27dcd04c71d95c53ba5< 56efc253196751ece1fc535a5b582be127b0578a affected
5796015fa968a3349027a27dcd04c71d95c53ba5< da273b377ae0d9bd255281ed3c2adb228321687b affected
b34c668a867ffdcf8bd8db4a36512572e82b4a15 affected
… +12 more rows
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I. Basic Information for CVE-2024-44986

Vulnerability Information
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Vulnerability Title
ipv6: fix possible UAF in ip6_finish_output2()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ipv6: fix possible UAF in ip6_finish_output2() If skb_expand_head() returns NULL, skb has been freed and associated dst/idev could also have been freed. We need to hold rcu_read_lock() to make sure the dst and associated idev are alive.
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ipv6组件存在释放后重用漏洞。
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 ded37d03440d0ab346a8287cc2ba88b8dc90ceb0 ~ ae8512e93f4ce47614ca89defaec1b93e00697b8 -
Linux Linux 5.14 -

II. Public POCs for CVE-2024-44986

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III. Intelligence Information for CVE-2024-44986

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Patches & Fixes for CVE-2024-44986 (5)

Other References for CVE-2024-44986 (2)

Same Patch Batch · Linux · 2024-09-04 · 58 CVEs total

CVE-2024-44984 10.0 CRITICAL bnxt_en: Fix double DMA unmapping for XDP_REDIRECT
CVE-2024-44998 9.8 CRITICAL atm: idt77252: prevent use after free in dequeue_rx()
CVE-2024-44985 9.8 CRITICAL ipv6: prevent possible UAF in ip6_xmit()
CVE-2024-44970 9.8 CRITICAL net/mlx5e: SHAMPO, Fix invalid WQ linked list unlink
CVE-2024-44994 8.8 HIGH iommu: Restore lost return in iommu_report_device_fault()
CVE-2024-44988 8.8 HIGH net: dsa: mv88e6xxx: Fix out-of-bound access
CVE-2024-44973 8.1 HIGH mm, slub: do not call do_slab_free for kfence object
CVE-2024-45000 7.8 HIGH fs/netfs/fscache_cookie: add missing "n_accesses" check
CVE-2024-44959 7.8 HIGH tracefs: Use generic inode RCU for synchronizing freeing
CVE-2024-44951 7.8 HIGH serial: sc16is7xx: fix TX fifo corruption
CVE-2024-44954 7.8 HIGH ALSA: line6: Fix racy access to midibuf
CVE-2024-44966 7.8 HIGH binfmt_flat: Fix corruption when not offsetting data start
CVE-2024-44967 7.8 HIGH drm/mgag200: Bind I2C lifetime to DRM device
CVE-2024-44974 7.8 HIGH mptcp: pm: avoid possible UaF when selecting endp
CVE-2024-44978 7.8 HIGH drm/xe: Free job before xe_exec_queue_put
CVE-2024-44987 7.8 HIGH ipv6: prevent UAF in ip6_send_skb()
CVE-2024-44995 7.8 HIGH net: hns3: fix a deadlock problem when config TC during resetting
CVE-2024-44997 7.8 HIGH net: ethernet: mtk_wed: fix use-after-free panic in mtk_wed_setup_tc_block_cb()
CVE-2024-44949 7.8 HIGH parisc: fix a possible DMA corruption
CVE-2024-44992 7.5 HIGH smb/client: avoid possible NULL dereference in cifs_free_subrequest()

Showing top 20 of 58 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-44986

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