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CVE-2025-37823— net_sched: hfsc: Fix a potential UAF in hfsc_dequeue() too

AI Predicted 6.9 Difficulty: Hard EPSS 0.05% · P16

Affected Version Matrix 18

VendorProductVersion RangeStatus
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 68f256305ceb426d545a0dc31f83c2ab1d211a1eaffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 2f46d14919c39528c6e540ebc43f90055993eedcaffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< da7936518996d290e2fcfcaf6cd7e15bfd87804aaffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 11bccb054c1462fb069219f8e98e97a5a730758eaffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 76c4c22c2437d3d3880efc0f62eca06ef078d290affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< c6f035044104c6ff656f4565cd22938dc892528caffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< c6936266f8bf98a53f28ef9a820e6a501e946d09affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 6ccbda44e2cc3d26fd22af54c650d6d5d801addfaffected
… +10 more rows
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I. Basic Information for CVE-2025-37823

Vulnerability Information
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Vulnerability Title
net_sched: hfsc: Fix a potential UAF in hfsc_dequeue() too
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net_sched: hfsc: Fix a potential UAF in hfsc_dequeue() too Similarly to the previous patch, we need to safe guard hfsc_dequeue() too. But for this one, we don't have a reliable reproducer.
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，该漏洞源于释放后重用，可能导致内存损坏。
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 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ~ 68f256305ceb426d545a0dc31f83c2ab1d211a1e -
LinuxLinux 2.6.12 -

II. Public POCs for CVE-2025-37823

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III. Intelligence Information for CVE-2025-37823

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Patches & Fixes for CVE-2025-37823 (1)

Same Patch Batch · Linux · 2025-05-08 · 33 CVEs total

CVE-2025-37818LoongArch: Return NULL from huge_pte_offset() for invalid PMD
CVE-2025-37833net/niu: Niu requires MSIX ENTRY_DATA fields touch before entry reads
CVE-2025-37834mm/vmscan: don't try to reclaim hwpoison folio
CVE-2025-37831cpufreq: apple-soc: Fix null-ptr-deref in apple_soc_cpufreq_get_rate()
CVE-2025-37830cpufreq: scmi: Fix null-ptr-deref in scmi_cpufreq_get_rate()
CVE-2025-37829cpufreq: scpi: Fix null-ptr-deref in scpi_cpufreq_get_rate()
CVE-2025-37828scsi: ufs: mcq: Add NULL check in ufshcd_mcq_abort()
CVE-2025-37826scsi: ufs: core: Add NULL check in ufshcd_mcq_compl_pending_transfer()
CVE-2025-37827btrfs: zoned: return EIO on RAID1 block group write pointer mismatch
CVE-2025-37825nvmet: fix out-of-bounds access in nvmet_enable_port
CVE-2025-37824tipc: fix NULL pointer dereference in tipc_mon_reinit_self()
CVE-2025-37821sched/eevdf: Fix se->slice being set to U64_MAX and resulting crash
CVE-2025-37822riscv: uprobes: Add missing fence.i after building the XOL buffer
CVE-2025-37820xen-netfront: handle NULL returned by xdp_convert_buff_to_frame()
CVE-2025-37819irqchip/gic-v2m: Prevent use after free of gicv2m_get_fwnode()
CVE-2025-37817mcb: fix a double free bug in chameleon_parse_gdd()
CVE-2025-37800driver core: fix potential NULL pointer dereference in dev_uevent()
CVE-2025-37816mei: vsc: Fix fortify-panic caused by invalid counted_by() use
CVE-2025-37815misc: microchip: pci1xxxx: Fix Kernel panic during IRQ handler registration
CVE-2025-37814tty: Require CAP_SYS_ADMIN for all usages of TIOCL_SELMOUSEREPORT

Showing top 20 of 33 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-37823

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