OESA-2022-1691

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OESA-2022-1691

Summary: kernel security update

Details: The Linux Kernel, the operating system core itself. Security Fix(es): Non-transparent sharing of branch predictor within a context in some Intel(R) Processors may allow an authorized user to potentially enable information disclosure via local access.(CVE-2022-0002) In the Linux kernel before 5.17.3, fs/io_uring.c has a use-after-free due to a race condition in io_uring timeouts. This can be triggered by a local user who has no access to any user namespace; however, the race condition perhaps can only be exploited infrequently.(CVE-2022-29582) A use-after-free vulnerability was found in the Linux kernel in drivers/net/hamradio. This flaw allows a local attacker with a user privilege to cause a denial of service (DOS) when the mkiss or sixpack device is detached and reclaim resources early.(CVE-2022-1195) In mmc_blk_read_single of block.c, there is a possible way to read kernel heap memory due to uninitialized data. This could lead to local information disclosure if reading from an SD card that triggers errors, with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-216481035References: Upstream kernel(CVE-2022-20008) Due to the small table perturb size, a memory leak flaw was found in the Linux kernel’s TCP source port generation algorithm in the net/ipv4/tcp.c function. This flaw allows an attacker to leak information and may cause a denial of service.(CVE-2022-1012) A flaw was found in the Linux kernel’s nfcmrvl_nci_unregister_dev() function. A race condition leads to a use-after-free issue when simulating the NFC device from the user space.(CVE-2022-1734) Improper Update of Reference Count vulnerability in net/sched of Linux Kernel allows local attacker to cause privilege escalation to root. This issue affects: Linux Kernel versions prior to 5.18; version 4.14 and later versions.(CVE-2022-29581) A NULL pointer dereference flaw was found in the Linux kernel’s X.25 set of standardized network protocols functionality in the way a user terminates their session using a simulated Ethernet card and continued usage of this connection. This flaw allows a local user to crash the system.(CVE-2022-1516)

References: https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2022-1691, https://nvd.nist.gov/vuln/detail/CVE-2022-0002, https://nvd.nist.gov/vuln/detail/CVE-2022-29582, https://nvd.nist.gov/vuln/detail/CVE-2022-1195, https://nvd.nist.gov/vuln/detail/CVE-2022-20008, https://nvd.nist.gov/vuln/detail/CVE-2022-1012, https://nvd.nist.gov/vuln/detail/CVE-2022-1734, https://nvd.nist.gov/vuln/detail/CVE-2022-29581, https://nvd.nist.gov/vuln/detail/CVE-2022-1516