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CVE-2024-50036— net: do not delay dst_entries_add() in dst_release()

EPSS 0.02% · P5
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I. Basic Information for CVE-2024-50036

Vulnerability Information
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Vulnerability Title
net: do not delay dst_entries_add() in dst_release()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: do not delay dst_entries_add() in dst_release() dst_entries_add() uses per-cpu data that might be freed at netns dismantle from ip6_route_net_exit() calling dst_entries_destroy() Before ip6_route_net_exit() can be called, we release all the dsts associated with this netns, via calls to dst_release(), which waits an rcu grace period before calling dst_destroy() dst_entries_add() use in dst_destroy() is racy, because dst_entries_destroy() could have been called already. Decrementing the number of dsts must happen sooner. Notes: 1) in CONFIG_XFRM case, dst_destroy() can call dst_release_immediate(child), this might also cause UAF if the child does not have DST_NOCOUNT set. IPSEC maintainers might take a look and see how to address this. 2) There is also discussion about removing this count of dst, which might happen in future kernels.
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net组件在dst_release中的dst_entries_add延迟问题。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux f88649721268999bdff09777847080a52004f691 ~ 547087307bc19417b4f2bc85ba9664a3e8db5a6a -
LinuxLinux 3.16 -

II. Public POCs for CVE-2024-50036

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III. Intelligence Information for CVE-2024-50036

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Same Patch Batch · Linux · 2024-10-21 · 372 CVEs total

CVE-2024-50017x86/mm/ident_map: Use gbpages only where full GB page should be mapped.
CVE-2024-50028thermal: core: Reference count the zone in thermal_zone_get_by_id()
CVE-2024-50029Bluetooth: hci_conn: Fix UAF in hci_enhanced_setup_sync
CVE-2024-50027thermal: core: Free tzp copy along with the thermal zone
CVE-2024-50025scsi: fnic: Move flush_work initialization out of if block
CVE-2024-50026scsi: wd33c93: Don't use stale scsi_pointer value
CVE-2024-50023net: phy: Remove LED entry from LEDs list on unregister
CVE-2024-50024net: Fix an unsafe loop on the list
CVE-2024-50022device-dax: correct pgoff align in dax_set_mapping()
CVE-2024-50021ice: Fix improper handling of refcount in ice_dpll_init_rclk_pins()
CVE-2024-50020ice: Fix improper handling of refcount in ice_sriov_set_msix_vec_count()
CVE-2024-50019kthread: unpark only parked kthread
CVE-2024-50010exec: don't WARN for racy path_noexec check
CVE-2024-50005mac802154: Fix potential RCU dereference issue in mac802154_scan_worker
CVE-2024-50006ext4: fix i_data_sem unlock order in ext4_ind_migrate()
CVE-2024-50007ALSA: asihpi: Fix potential OOB array access
CVE-2024-50008wifi: mwifiex: Fix memcpy() field-spanning write warning in mwifiex_cmd_802_11_scan_ext()
CVE-2024-50009cpufreq: amd-pstate: add check for cpufreq_cpu_get's return value
CVE-2024-50013exfat: fix memory leak in exfat_load_bitmap()
CVE-2024-50015ext4: dax: fix overflowing extents beyond inode size when partially writing

Showing top 20 of 372 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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