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CVE-2024-33619— efi: libstub: only free priv.runtime_map when allocated

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efi:libstub模块仅在分配时释放priv.runtime_map。

CVSS 7.8 · High EPSS 0.25% · P15

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux f80d26043af91ceb5036c478101c015edb9e7630< b8938d6f570f010a1dcdbfed3e5b5d3258c2a908 affected
f80d26043af91ceb5036c478101c015edb9e7630< 9dce01f386c9ce6990c0a83fa14b1c95330b037e affected
f80d26043af91ceb5036c478101c015edb9e7630< 6ca67a5fe1c606d1fbe24c30a9fc0bdc43a18554 affected
f80d26043af91ceb5036c478101c015edb9e7630< 4b2543f7e1e6b91cfc8dd1696e3cdf01c3ac8974 affected
6.1 affected
< 6.1 unaffected
6.1.93≤ 6.1.* unaffected
6.6.33≤ 6.6.* unaffected
… +2 more rows
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I. Basic Information for CVE-2024-33619

Vulnerability Information
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Vulnerability Title
efi: libstub: only free priv.runtime_map when allocated
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: efi: libstub: only free priv.runtime_map when allocated priv.runtime_map is only allocated when efi_novamap is not set. Otherwise, it is an uninitialized value. In the error path, it is freed unconditionally. Avoid passing an uninitialized value to free_pool. Free priv.runtime_map only when it was allocated. This bug was discovered and resolved using Coverity Static Analysis Security Testing (SAST) by Synopsys, Inc.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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efi:libstub模块仅在分配时释放priv.runtime_map。
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 f80d26043af91ceb5036c478101c015edb9e7630 ~ b8938d6f570f010a1dcdbfed3e5b5d3258c2a908 -
Linux Linux 6.1 -

II. Public POCs for CVE-2024-33619

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III. Intelligence Information for CVE-2024-33619

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Other References for CVE-2024-33619 (4)

Same Patch Batch · Linux · 2024-06-21 · 40 CVEs total

CVE-2024-36288 9.8 CRITICAL SUNRPC: Fix loop termination condition in gss_free_in_token_pages()
CVE-2024-38381 8.8 HIGH nfc: nci: Fix uninit-value in nci_rx_work
CVE-2024-36477 7.8 HIGH tpm_tis_spi: Account for SPI header when allocating TPM SPI xfer buffer
CVE-2024-38628 7.8 HIGH usb: gadget: u_audio: Fix race condition use of controls after free during gadget unbind.
CVE-2024-36286 7.8 HIGH netfilter: nfnetlink_queue: acquire rcu_read_lock() in instance_destroy_rcu()
CVE-2024-38626 7.8 HIGH fuse: clear FR_SENT when re-adding requests into pending list
CVE-2024-38388 7.8 HIGH ALSA: hda/cs_dsp_ctl: Use private_free for control cleanup
CVE-2024-38623 7.8 HIGH fs/ntfs3: Use variable length array instead of fixed size
CVE-2024-38635 7.8 HIGH soundwire: cadence: fix invalid PDI offset
CVE-2024-38659 7.3 HIGH enic: Validate length of nl attributes in enic_set_vf_port
CVE-2024-38637 greybus: lights: check return of get_channel_from_mode
CVE-2024-38630 watchdog: cpu5wdt.c: Fix use-after-free bug caused by cpu5wdt_trigger
CVE-2024-38631 iio: adc: PAC1934: fix accessing out of bounds array index
CVE-2024-38632 vfio/pci: fix potential memory leak in vfio_intx_enable()
CVE-2024-38633 serial: max3100: Update uart_driver_registered on driver removal
CVE-2024-38634 serial: max3100: Lock port->lock when calling uart_handle_cts_change()
CVE-2024-38636 f2fs: multidev: fix to recognize valid zero block address
CVE-2024-38625 fs/ntfs3: Check 'folio' pointer for NULL
CVE-2024-38662 bpf: Allow delete from sockmap/sockhash only if update is allowed
CVE-2024-38780 dma-buf/sw-sync: don't enable IRQ from sync_print_obj()

Showing top 20 of 40 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-33619

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