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Linux KernelOperating system · Linux

CVE-2024-47715

MEDIUM · 5.5 CVSS v3.1 Published 2024-10-21
Fix available
A fix is available. Upgrade to 6.6.54 / 6.10.13 or later.
See remediation →
57/100
Remediation priority · Elevated
Zero-click Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7915: fix oops on non-dbdc mt7986 mt7915_band_config() sets band_idx = 1 on the main phy for mt7986 with MT7975_ONE_ADIE or MT7976_ONE_ADIE. Commit 0335c034e726 ("wifi: mt76: fix race condition related to checking tx queue fill status") introduced a dereference of the phys array indirectly indexed by band_idx via wcid->phy_idx in mt76_wcid_cleanup(). This caused the following Oops on affected mt7986 devices: Unable to handle kernel read from unreadable memory at virtual address 0000000000000024 Mem abort info: ESR = 0x0000000096000005 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x05: level 1 translation fault Data abort info: ISV = 0, ISS = 0x00000005 CM = 0, WnR = 0 user pgtable: 4k pages, 39-bit VAs, pgdp=0000000042545000 [0000000000000024] pgd=0000000000000000, p4d=0000000000000000, pud=0000000000000000 Internal error: Oops: 0000000096000005 [#1] SMP Modules linked in: ... mt7915e mt76_connac_lib mt76 mac80211 cfg80211 ... CPU: 2 PID: 1631 Comm: hostapd Not tainted 5.15.150 #0 Hardware name: ZyXEL EX5700 (Telenor) (DT) pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : mt76_wcid_cleanup+0x84/0x22c [mt76] lr : mt76_wcid_cleanup+0x64/0x22c [mt76] sp : ffffffc00a803700 x29: ffffffc00a803700 x28: ffffff80008f7300 x27: ffffff80003f3c00 x26: ffffff80000a7880 x25: ffffffc008c26e00 x24: 0000000000000001 x23: ffffffc000a68114 x22: 0000000000000000 x21: ffffff8004172cc8 x20: ffffffc00a803748 x19: ffffff8004152020 x18: 0000000000000000 x17: 00000000000017c0 x16: ffffffc008ef5000 x15: 0000000000000be0 x14: ffffff8004172e28 x13: ffffff8004172e28 x12: 0000000000000000 x11: 0000000000000000 x10: ffffff8004172e30 x9 : ffffff8004172e28 x8 : 0000000000000000 x7 : ffffff8004156020 x6 : 0000000000000000 x5 : 0000000000000031 x4 : 0000000000000000 x3 : 0000000000000001 x2 : 0000000000000000 x1 : ffffff80008f7300 x0 : 0000000000000024 Call trace: mt76_wcid_cleanup+0x84/0x22c [mt76] __mt76_sta_remove+0x70/0xbc [mt76] mt76_sta_state+0x8c/0x1a4 [mt76] mt7915_eeprom_get_power_delta+0x11e4/0x23a0 [mt7915e] drv_sta_state+0x144/0x274 [mac80211] sta_info_move_state+0x1cc/0x2a4 [mac80211] sta_set_sinfo+0xaf8/0xc24 [mac80211] sta_info_destroy_addr_bss+0x4c/0x6c [mac80211] ieee80211_color_change_finish+0x1c08/0x1e70 [mac80211] cfg80211_check_station_change+0x1360/0x4710 [cfg80211] genl_family_rcv_msg_doit+0xb4/0x110 genl_rcv_msg+0xd0/0x1bc netlink_rcv_skb+0x58/0x120 genl_rcv+0x34/0x50 netlink_unicast+0x1f0/0x2ec netlink_sendmsg+0x198/0x3d0 ____sys_sendmsg+0x1b0/0x210 ___sys_sendmsg+0x80/0xf0 __sys_sendmsg+0x44/0xa0 __arm64_sys_sendmsg+0x20/0x30 invoke_syscall.constprop.0+0x4c/0xe0 do_el0_svc+0x40/0xd0 el0_svc+0x14/0x4c el0t_64_sync_handler+0x100/0x110 el0t_64_sync+0x15c/0x160 Code: d2800002 910092c0 52800023 f9800011 (885f7c01) ---[ end trace 7e42dd9a39ed2281 ]--- Fix by using mt76_dev_phy() which will map band_idx to the correct phy for all hardware combinations.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis

A detailed technical summary for this CVE is being prepared.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Linux KernelOperating system
Affected:>= 6.6.48, < 6.6.54>= 6.7, < 6.10.13>= 6.11, < 6.11.2

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 6.6.54 / 6.10.13 / 6.11.2 or later
Fixed in 6.6.546.10.136.11.2
Vendor patch git.kernel.org →
Recommended fix High confidence

Linux Kernel 6.6.54 (or 6.10.13 or 6.11.2 depending on branch)

  1. 1. Identify the current running kernel version using `uname -r`
  2. 2. Upgrade the Linux kernel to version 6.6.54 or later if using the 6.6.x stable branch
  3. 3. Alternatively, upgrade to version 6.10.13 or later if using the 6.7-6.10 stable branch
  4. 4. Alternatively, upgrade to version 6.11.2 or later if using the 6.11 stable branch
  5. 5. After kernel upgrade, reboot the system to load the fixed kernel
  6. 6. Verify the fix is applied by checking the kernel version with `uname -r`
Caveat Kernel upgrade carries standard upgrade risks; ensure compatibility with local kernel modules and hardware before deploying in production

Generated from the published advisory — verify against the referenced sources before acting.

We can perform the upgrade in your staging environment and verify nothing breaks — typical engagement from $1,600. Get the upgrade done

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2024-47715 in production — separate from our analysis above.

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