In the Linux kernel, the following vulnerability has been resolved:
net/bnx2x: Prevent access to a freed page in page_pool Fix race condition
leading to system crash during EEH error handling During EEH error
recovery, the bnx2x driver’s transmit timeout logic could cause a race
condition when handling reset tasks. The bnx2x_tx_timeout() schedules reset
tasks via bnx2x_sp_rtnl_task(), which ultimately leads to
bnx2x_nic_unload(). In bnx2x_nic_unload() SGEs are freed using
bnx2x_free_rx_sge_range(). However, this could overlap with the EEH
driver’s attempt to reset the device using bnx2x_io_slot_reset(), which
also tries to free SGEs. This race condition can result in system crashes
due to accessing freed memory locations in bnx2x_free_rx_sge() 799 static
inline void bnx2x_free_rx_sge(struct bnx2x *bp, 800 struct bnx2x_fastpath
*fp, u16 index) 801 { 802 struct sw_rx_page *sw_buf =
&fp->rx_page_ring[index]; 803 struct page *page = sw_buf->page; … where
sw_buf was set to NULL after the call to dma_unmap_page() by the preceding
thread. EEH: Beginning: ‘slot_reset’ PCI 0011:01:00.0#10000: EEH: Invoking
bnx2x->slot_reset() bnx2x: [bnx2x_io_slot_reset:14228(eth1)]IO slot reset
initializing… bnx2x 0011:01:00.0: enabling device (0140 -> 0142) bnx2x:
[bnx2x_io_slot_reset:14244(eth1)]IO slot reset –> driver unload Kernel
attempted to read user page (0) - exploit attempt? (uid: 0) BUG: Kernel
NULL pointer dereference on read at 0x00000000 Faulting instruction
address: 0xc0080000025065fc Oops: Kernel access of bad area, sig: 11 [#1]
… Call Trace: [c000000003c67a20] [c00800000250658c]
bnx2x_io_slot_reset+0x204/0x610 [bnx2x] (unreliable) [c000000003c67af0]
[c0000000000518a8] eeh_report_reset+0xb8/0xf0 [c000000003c67b60]
[c000000000052130] eeh_pe_report+0x180/0x550 [c000000003c67c70]
[c00000000005318c] eeh_handle_normal_event+0x84c/0xa60 [c000000003c67d50]
[c000000000053a84] eeh_event_handler+0xf4/0x170 [c000000003c67da0]
[c000000000194c58] kthread+0x1c8/0x1d0 [c000000003c67e10]
[c00000000000cf64] ret_from_kernel_thread+0x5c/0x64 To solve this issue, we
need to verify page pool allocations before freeing.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux | < 5.15.0-112.122 | UNKNOWN |
ubuntu | 23.10 | noarch | linux | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux | < 6.8.0-35.35 | UNKNOWN |
ubuntu | 14.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 16.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-aws | < 5.15.0-1063.69 | UNKNOWN |
git.kernel.org/linus/d27e2da94a42655861ca4baea30c8cd65546f25d (6.9-rc1)
git.kernel.org/stable/c/3a9f78b297e08ca8e88ae3ecff1f6fe2766dc5eb
git.kernel.org/stable/c/44f9f1abb0ecc43023225ab9539167facbabf0ec
git.kernel.org/stable/c/4f37d3a7e004bbf560c21441ca9c022168017ec4
git.kernel.org/stable/c/7bcc090c81116c66936a7415f2c6b1483a4bcfd9
git.kernel.org/stable/c/8eebff95ce9558be66a36aa7cfb43223f3ab4699
git.kernel.org/stable/c/8ffcd3ccdbda0c918c4a0f922ef1c17010f1b598
git.kernel.org/stable/c/c51f8b6930db3f259b8820b589f2459d2df3fc68
git.kernel.org/stable/c/cf7d8cba639ae792a42c2a137b495eac262ac36c
git.kernel.org/stable/c/d27e2da94a42655861ca4baea30c8cd65546f25d
launchpad.net/bugs/cve/CVE-2024-26859
nvd.nist.gov/vuln/detail/CVE-2024-26859
security-tracker.debian.org/tracker/CVE-2024-26859
ubuntu.com/security/notices/USN-6816-1
ubuntu.com/security/notices/USN-6817-1
ubuntu.com/security/notices/USN-6817-2
ubuntu.com/security/notices/USN-6817-3
ubuntu.com/security/notices/USN-6820-1
ubuntu.com/security/notices/USN-6820-2
ubuntu.com/security/notices/USN-6821-1
ubuntu.com/security/notices/USN-6821-2
ubuntu.com/security/notices/USN-6821-3
ubuntu.com/security/notices/USN-6821-4
ubuntu.com/security/notices/USN-6828-1
www.cve.org/CVERecord?id=CVE-2024-26859