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CVE-2024-39296— bonding: fix oops during rmmod

AI Predicted 5.5 Difficulty: Moderate EPSS 0.17% · P6

Affected Version Matrix 8

VendorProductVersion RangeStatus
LinuxLinuxcc317ea3d9272fab4f6fef527c865f30ca479394< f07224c16678a8af54ddc059b3d2d51885d7f35eaffected
cc317ea3d9272fab4f6fef527c865f30ca479394< cf48aee81103ca06d09d73d33fb72f1191069aa6affected
cc317ea3d9272fab4f6fef527c865f30ca479394< a45835a0bb6ef7d5ddbc0714dd760de979cb6eceaffected
6.6affected
< 6.6unaffected
6.6.34≤ 6.6.*unaffected
6.9.5≤ 6.9.*unaffected
6.10≤ *unaffected
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I. Basic Information for CVE-2024-39296

Vulnerability Information
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Vulnerability Title
bonding: fix oops during rmmod
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: bonding: fix oops during rmmod "rmmod bonding" causes an oops ever since commit cc317ea3d927 ("bonding: remove redundant NULL check in debugfs function"). Here are the relevant functions being called: bonding_exit() bond_destroy_debugfs() debugfs_remove_recursive(bonding_debug_root); bonding_debug_root = NULL; <--------- SET TO NULL HERE bond_netlink_fini() rtnl_link_unregister() __rtnl_link_unregister() unregister_netdevice_many_notify() bond_uninit() bond_debug_unregister() (commit removed check for bonding_debug_root == NULL) debugfs_remove() simple_recursive_removal() down_write() -> OOPS However, reverting the bad commit does not solve the problem completely because the original code contains a race that could cause the same oops, although it was much less likely to be triggered unintentionally: CPU1 rmmod bonding bonding_exit() bond_destroy_debugfs() debugfs_remove_recursive(bonding_debug_root); CPU2 echo -bond0 > /sys/class/net/bonding_masters bond_uninit() bond_debug_unregister() if (!bonding_debug_root) CPU1 bonding_debug_root = NULL; So do NOT revert the bad commit (since the removed checks were racy anyway), and instead change the order of actions taken during module removal. The same oops can also happen if there is an error during module init, so apply the same fix there.
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，该漏洞源于服务器出现问题或出现错误，导致无法正常处理请求或提供服务。
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 cc317ea3d9272fab4f6fef527c865f30ca479394 ~ f07224c16678a8af54ddc059b3d2d51885d7f35e -
LinuxLinux 6.6 -

II. Public POCs for CVE-2024-39296

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III. Intelligence Information for CVE-2024-39296

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Other References for CVE-2024-39296 (3)

Same Patch Batch · Linux · 2024-06-25 · 24 CVEs total

CVE-2024-39371io_uring: check for non-NULL file pointer in io_file_can_poll()
CVE-2024-39471drm/amdgpu: add error handle to avoid out-of-bounds
CVE-2024-39469nilfs2: fix nilfs_empty_dir() misjudgment and long loop on I/O errors
CVE-2024-39470eventfs: Fix a possible null pointer dereference in eventfs_find_events()
CVE-2024-39468smb: client: fix deadlock in smb2_find_smb_tcon()
CVE-2024-39467f2fs: fix to do sanity check on i_xattr_nid in sanity_check_inode()
CVE-2024-39466thermal/drivers/qcom/lmh: Check for SCM availability at probe
CVE-2024-39464media: v4l: async: Fix notifier list entry init
CVE-2024-39465media: mgb4: Fix double debugfs remove
CVE-2024-394639p: add missing locking around taking dentry fid list
CVE-2024-39462clk: bcm: dvp: Assign ->num before accessing ->hws
CVE-2024-39461clk: bcm: rpi: Assign ->num before accessing ->hws
CVE-2021-4440x86/xen: Drop USERGS_SYSRET64 paravirt call
CVE-2024-39301net/9p: fix uninit-value in p9_client_rpc()
CVE-2024-39298mm/memory-failure: fix handling of dissolved but not taken off from buddy pages
CVE-2024-39293Revert "xsk: Support redirect to any socket bound to the same umem"
CVE-2024-39276ext4: fix mb_cache_entry's e_refcnt leak in ext4_xattr_block_cache_find()
CVE-2024-38661s390/ap: Fix crash in AP internal function modify_bitmap()
CVE-2024-38385genirq/irqdesc: Prevent use-after-free in irq_find_at_or_after()
CVE-2024-38306btrfs: protect folio::private when attaching extent buffer folios

Showing top 20 of 24 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-39296

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