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CVE-2024-46790— codetag: debug: mark codetags for poisoned page as empty

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，该漏洞源于没有将中毒页面的代码标签标记为空。

AI Predicted 4.3 Difficulty: Moderate EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 6

VendorProduct Version RangeStatus
Linux Linux d224eb0287fbd84f4f13eca042c7f08f87138f3b< 16ad36c8e66a26626e7d0224100b433483a2acef affected
d224eb0287fbd84f4f13eca042c7f08f87138f3b< 5e9784e997620af7c1399029282f5d6964b41942 affected
6.10 affected
< 6.10 unaffected
6.10.10≤ 6.10.* unaffected
6.11≤ * unaffected
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I. Basic Information for CVE-2024-46790

Vulnerability Information
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Vulnerability Title
codetag: debug: mark codetags for poisoned page as empty
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: codetag: debug: mark codetags for poisoned page as empty When PG_hwpoison pages are freed they are treated differently in free_pages_prepare() and instead of being released they are isolated. Page allocation tag counters are decremented at this point since the page is considered not in use. Later on when such pages are released by unpoison_memory(), the allocation tag counters will be decremented again and the following warning gets reported: [ 113.930443][ T3282] ------------[ cut here ]------------ [ 113.931105][ T3282] alloc_tag was not set [ 113.931576][ T3282] WARNING: CPU: 2 PID: 3282 at ./include/linux/alloc_tag.h:130 pgalloc_tag_sub.part.66+0x154/0x164 [ 113.932866][ T3282] Modules linked in: hwpoison_inject fuse ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4 xt_conntrack ebtable_nat ebtable_broute ip6table_nat ip6table_man4 [ 113.941638][ T3282] CPU: 2 UID: 0 PID: 3282 Comm: madvise11 Kdump: loaded Tainted: G W 6.11.0-rc4-dirty #18 [ 113.943003][ T3282] Tainted: [W]=WARN [ 113.943453][ T3282] Hardware name: QEMU KVM Virtual Machine, BIOS unknown 2/2/2022 [ 113.944378][ T3282] pstate: 40400005 (nZcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 113.945319][ T3282] pc : pgalloc_tag_sub.part.66+0x154/0x164 [ 113.946016][ T3282] lr : pgalloc_tag_sub.part.66+0x154/0x164 [ 113.946706][ T3282] sp : ffff800087093a10 [ 113.947197][ T3282] x29: ffff800087093a10 x28: ffff0000d7a9d400 x27: ffff80008249f0a0 [ 113.948165][ T3282] x26: 0000000000000000 x25: ffff80008249f2b0 x24: 0000000000000000 [ 113.949134][ T3282] x23: 0000000000000001 x22: 0000000000000001 x21: 0000000000000000 [ 113.950597][ T3282] x20: ffff0000c08fcad8 x19: ffff80008251e000 x18: ffffffffffffffff [ 113.952207][ T3282] x17: 0000000000000000 x16: 0000000000000000 x15: ffff800081746210 [ 113.953161][ T3282] x14: 0000000000000000 x13: 205d323832335420 x12: 5b5d353031313339 [ 113.954120][ T3282] x11: ffff800087093500 x10: 000000000000005d x9 : 00000000ffffffd0 [ 113.955078][ T3282] x8 : 7f7f7f7f7f7f7f7f x7 : ffff80008236ba90 x6 : c0000000ffff7fff [ 113.956036][ T3282] x5 : ffff000b34bf4dc8 x4 : ffff8000820aba90 x3 : 0000000000000001 [ 113.956994][ T3282] x2 : ffff800ab320f000 x1 : 841d1e35ac932e00 x0 : 0000000000000000 [ 113.957962][ T3282] Call trace: [ 113.958350][ T3282] pgalloc_tag_sub.part.66+0x154/0x164 [ 113.959000][ T3282] pgalloc_tag_sub+0x14/0x1c [ 113.959539][ T3282] free_unref_page+0xf4/0x4b8 [ 113.960096][ T3282] __folio_put+0xd4/0x120 [ 113.960614][ T3282] folio_put+0x24/0x50 [ 113.961103][ T3282] unpoison_memory+0x4f0/0x5b0 [ 113.961678][ T3282] hwpoison_unpoison+0x30/0x48 [hwpoison_inject] [ 113.962436][ T3282] simple_attr_write_xsigned.isra.34+0xec/0x1cc [ 113.963183][ T3282] simple_attr_write+0x38/0x48 [ 113.963750][ T3282] debugfs_attr_write+0x54/0x80 [ 113.964330][ T3282] full_proxy_write+0x68/0x98 [ 113.964880][ T3282] vfs_write+0xdc/0x4d0 [ 113.965372][ T3282] ksys_write+0x78/0x100 [ 113.965875][ T3282] __arm64_sys_write+0x24/0x30 [ 113.966440][ T3282] invoke_syscall+0x7c/0x104 [ 113.966984][ T3282] el0_svc_common.constprop.1+0x88/0x104 [ 113.967652][ T3282] do_el0_svc+0x2c/0x38 [ 113.968893][ T3282] el0_svc+0x3c/0x1b8 [ 113.969379][ T3282] el0t_64_sync_handler+0x98/0xbc [ 113.969980][ T3282] el0t_64_sync+0x19c/0x1a0 [ 113.970511][ T3282] ---[ end trace 0000000000000000 ]--- To fix this, clear the page tag reference after the page got isolated and accounted for.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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，该漏洞源于没有将中毒页面的代码标签标记为空。
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 d224eb0287fbd84f4f13eca042c7f08f87138f3b ~ 16ad36c8e66a26626e7d0224100b433483a2acef -
Linux Linux 6.10 -

II. Public POCs for CVE-2024-46790

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III. Intelligence Information for CVE-2024-46790

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Patches & Fixes for CVE-2024-46790 (2)

Same Patch Batch · Linux · 2024-09-18 · 85 CVEs total

CVE-2024-46717 9.8 CRITICAL net/mlx5e: SHAMPO, Fix incorrect page release
CVE-2024-46736 9.8 CRITICAL smb: client: fix double put of @cfile in smb2_rename_path()
CVE-2024-46796 9.8 CRITICAL smb: client: fix double put of @cfile in smb2_set_path_size()
CVE-2024-46755 8.8 HIGH wifi: mwifiex: Do not return unused priv in mwifiex_get_priv_by_id()
CVE-2024-46750 7.8 HIGH PCI: Add missing bridge lock to pci_bus_lock()
CVE-2024-46787 7.8 HIGH userfaultfd: fix checks for huge PMDs
CVE-2024-46716 7.8 HIGH dmaengine: altera-msgdma: properly free descriptor in msgdma_free_descriptor
CVE-2024-46734 7.8 HIGH btrfs: fix race between direct IO write and fsync when using same fd
CVE-2024-46738 7.8 HIGH VMCI: Fix use-after-free when removing resource in vmci_resource_remove()
CVE-2024-46740 7.8 HIGH binder: fix UAF caused by offsets overwrite
CVE-2024-46781 7.8 HIGH nilfs2: fix missing cleanup on rollforward recovery error
CVE-2024-46746 7.8 HIGH HID: amd_sfh: free driver_data after destroying hid device
CVE-2024-46780 7.8 HIGH nilfs2: protect references to superblock parameters exposed in sysfs
CVE-2024-46741 7.8 HIGH misc: fastrpc: Fix double free of 'buf' in error path
CVE-2024-46751 7.8 HIGH btrfs: don't BUG_ON() when 0 reference count at btrfs_lookup_extent_info()
CVE-2024-46777 7.8 HIGH udf: Avoid excessive partition lengths
CVE-2024-46754 7.8 HIGH bpf: Remove tst_run from lwt_seg6local_prog_ops.
CVE-2024-46762 7.8 HIGH xen: privcmd: Fix possible access to a freed kirqfd instance
CVE-2024-46765 7.8 HIGH ice: protect XDP configuration with a mutex
CVE-2024-46771 7.8 HIGH can: bcm: Remove proc entry when dev is unregistered.

Showing top 20 of 85 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-46790

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